1. (noun)base, base of operations installation from which a military force initiates operations Synonyms: foundation, foot, bag, radix, stand, al-Qaeda, al-Qa'ida, substructure, theme, radical, base, alkali, basis, home, groundwork, base of operations, understructure, root, infrastructure, al-Qaida, pedestal, floor, fundament, cornerstone, stem, root word, nucleotide Antonyms: incidental, noble, echt, legitimate, right, genuine, superior, incident
2. (noun)foundation, base, fundament, foot, groundwork, substructure, understructure lowest support of a structure Synonyms: metrical unit, bottom, foundation garment, founding, tail, groundwork, pes, al-Qaida, instauration, butt, pedestal, substructure, posterior, rear end, infantry, introduction, can, ft, nates, al-Qaeda, theme, basis, innovation, fundament, invertebrate foot, nucleotide, foundation, buttocks, prat, radical, root, animal foot, floor, stern, metrical foot, seat, foot, backside, bum, tooshie, grounding, buns, arse, institution, hindquarters, tail end, behind, origination, understructure, alkali, cornerstone, base, hind end, derriere, rump, ass, home, keister, stem, base of operations, radix, root word, stand, rear, fanny, human foot, infrastructure, tush, initiation, al-Qa'ida, creation, bag Antonyms: noble, echt, genuine, right, incidental, incident, legitimate, superior
3. (noun)base, bag a place that the runner must touch before scoring Synonyms: al-Qaeda, bagful, groundwork, al-Qaida, pedestal, substructure, traveling bag, theme, basis, grip, fundament, suitcase, nucleotide, travelling bag, radical, root, floor, cup of tea, foundation, old bag, foot, udder, understructure, alkali, cornerstone, base, home, purse, stem, base of operations, radix, root word, stand, pocketbook, handbag, infrastructure, al-Qa'ida, dish, bag Antonyms: legitimate, right, superior, genuine, incidental, incident, noble, echt
4. (noun)base the bottom or lowest part Synonyms: foundation, foot, bag, radix, stand, al-Qaeda, al-Qa'ida, substructure, theme, radical, alkali, basis, home, groundwork, base of operations, understructure, root, infrastructure, al-Qaida, pedestal, floor, fundament, cornerstone, stem, root word, nucleotide Antonyms: incident, superior, genuine, noble, incidental, echt, right, legitimate
5. (noun)base (anatomy) the part of an organ nearest its point of attachment Synonyms: foundation, foot, bag, radix, stand, al-Qaeda, al-Qa'ida, substructure, theme, radical, alkali, basis, home, groundwork, base of operations, understructure, root, infrastructure, al-Qaida, pedestal, floor, fundament, cornerstone, stem, root word, nucleotide Antonyms: superior, genuine, noble, incidental, incident, echt, right, legitimate
7. (noun)basis, base, foundation, fundament, groundwork, cornerstone the fundamental assumptions from which something is begun or developed or calculated or explained Synonyms: bottom, foundation garment, founding, tail, groundwork, al-Qaida, instauration, butt, pedestal, substructure, posterior, rear end, introduction, can, nates, al-Qaeda, theme, stern, basis, innovation, fundament, nucleotide, foundation, buttocks, prat, radical, root, floor, ground, seat, backside, bum, tooshie, grounding, buns, arse, foot, hindquarters, footing, tail end, behind, origination, understructure, alkali, cornerstone, base, hind end, derriere, rump, ass, home, keister, stem, base of operations, radix, root word, stand, rear, fanny, infrastructure, tush, institution, initiation, al-Qa'ida, creation, bag Antonyms: genuine, incidental, echt, right, noble, incident, superior, legitimate
8. (noun)base, pedestal, stand a support or foundation Synonyms: standstill, al-Qaeda, sales booth, groundwork, al-Qaida, pedestal, rack, point of view, theme, basis, fundament, standpoint, nucleotide, foundation, viewpoint, radical, root, floor, footstall, substructure, foot, understructure, alkali, cornerstone, base, stall, outdoor stage, bandstand, home, stem, base of operations, radix, root word, stand, tie-up, infrastructure, plinth, al-Qa'ida, bag Antonyms: right, echt, legitimate, genuine, superior, noble, incidental, incident
9. (noun)nucleotide, base a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA) Synonyms: foundation, foot, bag, radix, stand, al-Qaeda, al-Qa'ida, substructure, theme, radical, base, alkali, basis, home, groundwork, base of operations, understructure, root, infrastructure, al-Qaida, pedestal, floor, fundament, cornerstone, stem, root word, nucleotide Antonyms: legitimate, superior, genuine, incidental, noble, echt, incident, right
10. (noun)base, alkali any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water Synonyms: foundation, foot, bag, radix, stand, al-Qaeda, al-Qa'ida, substructure, theme, radical, base, alkali, basis, home, groundwork, base of operations, understructure, root, infrastructure, al-Qaida, pedestal, floor, fundament, cornerstone, stem, root word, nucleotide Antonyms: noble, legitimate, incidental, echt, right, superior, incident, genuine
11. (noun)base the bottom side of a geometric figure from which the altitude can be constructed Synonyms: foundation, foot, bag, radix, stand, al-Qaeda, al-Qa'ida, substructure, theme, radical, alkali, basis, home, groundwork, base of operations, understructure, root, infrastructure, al-Qaida, pedestal, floor, fundament, cornerstone, stem, root word, nucleotide Antonyms: genuine, legitimate, superior, right, noble, echt, incidental, incident
12. (noun)basis, base the most important or necessary part of something Synonyms: foundation, foot, ground, bag, radix, stand, al-Qaeda, al-Qa'ida, substructure, theme, radical, base, alkali, basis, home, groundwork, base of operations, understructure, footing, root, infrastructure, al-Qaida, pedestal, fundament, floor, stem, root word, cornerstone, nucleotide Antonyms: echt, genuine, incident, superior, noble, incidental, right, legitimate
13. (noun)base, radix (numeration system) the positive integer that is equivalent to one in the next higher counting place Synonyms: foundation, foot, bag, radix, stand, al-Qaeda, al-Qa'ida, substructure, theme, radical, base, alkali, basis, home, groundwork, base of operations, understructure, root, infrastructure, al-Qaida, pedestal, floor, fundament, cornerstone, stem, root word, nucleotide Antonyms: echt, right, noble, legitimate, superior, incident, incidental, genuine
14. (noun)base, home the place where you are stationed and from which missions start and end Synonyms: al-Qaeda, bag, domicile, groundwork, al-Qaida, place, pedestal, substructure, house, theme, plate, basis, fundament, nucleotide, foundation, radical, root, home base, floor, household, habitation, family, nursing home, foot, abode, understructure, alkali, cornerstone, base, home plate, home, rest home, menage, stem, base of operations, radix, root word, stand, infrastructure, dwelling house, al-Qa'ida, dwelling Antonyms: right, noble, legitimate, genuine, incidental, echt, incident, superior
15. (noun)al-Qaeda, Qaeda, al-Qa'ida, al-Qaida, Base a terrorist network intensely opposed to the United States that dispenses money and logistical support and training to a wide variety of radical Islamic terrorist groups; has cells in more than 50 countries Synonyms: foundation, foot, bag, radix, stand, al-Qaeda, substructure, theme, base of operations, radical, alkali, basis, home, groundwork, al-Qa'ida, understructure, root, infrastructure, al-Qaida, pedestal, floor, fundament, cornerstone, stem, root word, nucleotide Antonyms: right, incidental, superior, echt, incident, legitimate, noble, genuine
16. (noun)root, root word, base, stem, theme, radical (linguistics) the form of a word after all affixes are removed Synonyms: al-Qaeda, idea, groundwork, al-Qaida, ascendent, base, substructure, composition, paper, fundament, motif, prow, theme, ascendant, basis, group, understructure, shank, stalk, nucleotide, report, foundation, etymon, radical, root, subject, floor, bow, fore, topic, free radical, melodic theme, source, ancestor, foot, antecedent, musical theme, infrastructure, alkali, cornerstone, origin, pedestal, home, rootage, tooth root, stem, base of operations, radix, root word, stand, stem turn, solution, beginning, chemical group, al-Qa'ida, bag Antonyms: noble, legitimate, incidental, superior, incident, genuine, right, echt
17. (noun)infrastructure, base the stock of basic facilities and capital equipment needed for the functioning of a country or area Synonyms: foundation, foot, bag, radix, stand, al-Qaeda, al-Qa'ida, substructure, theme, radical, base, alkali, basis, home, groundwork, base of operations, understructure, root, infrastructure, al-Qaida, pedestal, floor, fundament, cornerstone, stem, root word, nucleotide Antonyms: legitimate, superior, echt, incident, right, noble, genuine, incidental
18. (noun)base the principal ingredient of a mixture Synonyms: foundation, foot, bag, radix, stand, al-Qaeda, al-Qa'ida, substructure, theme, radical, alkali, basis, home, groundwork, base of operations, understructure, root, infrastructure, al-Qaida, pedestal, floor, fundament, cornerstone, stem, root word, nucleotide Antonyms: noble, superior, legitimate, incident, right, echt, incidental, genuine
19. (noun)base a flat bottom on which something is intended to sit Synonyms: foundation, foot, bag, radix, stand, al-Qaeda, al-Qa'ida, substructure, theme, radical, alkali, basis, home, groundwork, base of operations, understructure, root, infrastructure, al-Qaida, pedestal, floor, fundament, cornerstone, stem, root word, nucleotide Antonyms: noble, genuine, right, legitimate, incidental, superior, echt, incident
20. (adj)base (electronics) the part of a transistor that separates the emitter from the collector Synonyms: foundation, foot, bag, radix, stand, al-Qaeda, al-Qa'ida, substructure, theme, radical, alkali, basis, home, groundwork, base of operations, understructure, root, infrastructure, al-Qaida, pedestal, floor, fundament, cornerstone, stem, root word, nucleotide Antonyms: right, incidental, genuine, noble, echt, incident, superior, legitimate
21. (adj)basal, base serving as or forming a base Synonyms: baseborn, meanspirited, base, basal, immoral, lowly, mean, radical, humble, primary Antonyms: noble, incident, incidental, echt, legitimate, superior, genuine, right
22. (adj)base, baseborn, humble, lowly of low birth or station (`base' is archaic in this sense) Synonyms: junior-grade, mean, basal, subaltern, humble, base, lowly, modest, menial, meanspirited, low, lower-ranking, secondary, small, immoral, baseborn, petty(a) Antonyms: right, incident, superior, genuine, incidental, noble, legitimate, echt
23. (adj)base (used of metals) consisting of or alloyed with inferior metal Synonyms: meanspirited, lowly, humble, baseborn, basal, mean, immoral Antonyms: legitimate, incident, right, echt, noble, genuine, superior, incidental
24. (adj)base, immoral not adhering to ethical or moral principles Synonyms: baseborn, meanspirited, base, basal, immoral, lowly, mean, humble Antonyms: incidental, legitimate, genuine, echt, noble, right, incident, superior
25. (adj)base, mean, meanspirited having or showing an ignoble lack of honor or morality Synonyms: hateful, tight, mingy, basal, ungenerous, mean(a), humble, base, lowly, average, baseborn, meanspirited, mean, bastardly, beggarly, immoral, miserly Antonyms: echt, incidental, noble, genuine, superior, right, incident, legitimate
28. (verb)establish, base, ground, found use as a basis for; found on Synonyms: demonstrate, ground, set up, install, strand, base, found, institute, instal, launch, build, prove, free-base, give, run aground, plant, shew, undercoat, lay down, establish, prime, anchor, make, show, constitute Antonyms: superior, incident, right, incidental, echt, genuine, noble, legitimate
29. (verb)base situate as a center of operations Synonyms: free-base, found, establish, ground Antonyms: echt, incident, genuine, incidental, superior, legitimate, noble, right
30. (verb)free-base, base use (purified cocaine) by burning it and inhaling the fumes Synonyms: free-base, base, establish, found, ground Antonyms: incident, noble, legitimate, genuine, echt, incidental, right, superior
Synonyms, Thesaurus & Antonyms of 'base'
English Synonyms and Antonyms
1. base A brutish man simply follows his animal instincts, without special inclination to do harm; the brutal have always a spirit of malice and cruelty. Brute has no special character, except as ind Synonyms: brutish, animal, brutal, ignorant, sensual, swinish, base, brute, imbruted, sottish, unintellectual, beastly, carnal, insensible, stolid, unspiritual, bestial, coarse, lascivious, stupid, vile Antonyms: elevated, exalted, great, intellectual, noble, enlightened, grand, humane, intelligent, refined
Synonyms for base 
