1. (noun) back, dorsum
the posterior part of a human (or animal) body from the neck to the end of the spine
Synonyms: cover, dorsum, rear, spine, backbone, spinal column, back, vertebral column, binding, backrest, rachis, book binding
Antonyms: front, anterior, current, look, advance, face, bring forward, veer, forward, ahead
2. (noun) rear, back
the side that goes last or is not normally seen
Synonyms: fanny, binding, tail, seat, backrest, butt, dorsum, rear end, can, nates, vertebral column, back, fundament, posterior, buttocks, behind, stern, bottom, backside, bum, rachis, spinal column, buns, hindquarters, tail end, derriere, tooshie, spine, hind end, book binding, rump, keister, ass, prat, arse, back end, cover, rear, tush, backbone
Antonyms: front, anterior, current, face, bring forward, veer, look, advance, ahead, forward
3. (noun) back, rear
the part of something that is furthest from the normal viewer
Synonyms: fanny, binding, tail, seat, backrest, butt, rachis, can, fundament, nates, vertebral column, back, rear end, posterior, buttocks, spine, stern, bottom, backside, bum, spinal column, buns, hindquarters, tail end, derriere, tooshie, dorsum, hind end, book binding, rump, keister, ass, prat, arse, back end, cover, rear, tush, backbone, behind
Antonyms: front, anterior, current, veer, look, advance, face, bring forward, forward, ahead
4. (noun) back
(football) a person who plays in the backfield
Synonyms: cover, dorsum, rear, spine, backbone, spinal column, vertebral column, binding, backrest, rachis, book binding
Antonyms: front, current, anterior, bring forward, advance, face, veer, look, ahead, forward
5. (noun) spinal column, vertebral column, spine, backbone, back, rachis
the series of vertebrae forming the axis of the skeleton and protecting the spinal cord
Synonyms: dorsum, cover, sticker, spikelet, mainstay, backrest, lynchpin, binding, grit, prickle, book binding, pricker, spine, sand, thorn, spinal column, keystone, spur, linchpin, back, backbone, rear, acantha, gumption, anchor, rachis, moxie, guts, vertebral column
Antonyms: front, anterior, current, bring forward, look, face, veer, advance, ahead, forward
6. (noun) binding, book binding, cover, back
the protective covering on the front, back, and spine of a book
Synonyms: dressing, blanket, screen, covering, cover version, spinal column, back, rear, binding, rachis, covert, covering fire, spine, natural covering, cover song, screening, bandaging, concealment, top, masking, cover charge, backbone, backrest, cover, dorsum, ski binding, book binding, vertebral column
Antonyms: front, anterior, current, face, look, bring forward, advance, veer, forward, ahead
7. (noun) back
the part of a garment that covers the back of your body
Synonyms: cover, dorsum, rear, spine, backbone, spinal column, vertebral column, binding, backrest, rachis, book binding
Antonyms: front, anterior, current, veer, bring forward, advance, look, face, ahead, forward
8. (noun) back, backrest
a support that you can lean against while sitting
Synonyms: cover, dorsum, rear, spine, backbone, spinal column, back, vertebral column, binding, backrest, rachis, book binding
Antonyms: front, anterior, current, face, bring forward, advance, veer, look, forward, ahead
9. (adj) back
(American football) the position of a player on a football team who is stationed behind the line of scrimmage
Synonyms: cover, dorsum, rear, spine, backbone, spinal column, vertebral column, binding, backrest, rachis, book binding
Antonyms: front, anterior, current, bring forward, veer, advance, look, face, forward, ahead
10. (adj) back(a)
related to or located at the back
Antonyms: front, anterior, current, bring forward, look, face, veer, advance, forward, ahead
11. (adj) back(a), hind(a), hinder(a)
located at or near the back of an animal
Antonyms: front, anterior, current, bring forward, face, veer, advance, look, ahead, forward
12. (verb) back(a)
of an earlier date
Antonyms: front, anterior, current, look, advance, face, veer, bring forward, forward, ahead
13. (verb) back, endorse, indorse, plump for, plunk for, support
be behind; approve of
Synonyms: stake, digest, abide, tolerate, bear, support, plunk for, hold up, endure, back, stick out, second, fend for, patronise, back up, keep going, certify, corroborate, endorse, stomach, defend, confirm, bear out, stand, affirm, game, brook, indorse, subscribe, suffer, bet on, sustain, patronize, underpin, gage, substantiate, hold, plump for, patronage, put up, punt
Antonyms: front, anterior, current, bring forward, face, advance, veer, look, forward, ahead
14. (verb) back
travel backward
Synonyms: indorse, support, gage, bet on, second, back up, plunk for, plump for, stake, game, punt, endorse
Antonyms: front, anterior, current, look, bring forward, face, veer, advance, ahead, forward
15. (verb) second, back, endorse, indorse
give support or one's approval to
Synonyms: indorse, support, gage, plunk for, second, back up, back, plump for, certify, stake, bet on, game, punt, endorse
Antonyms: front, anterior, current, bring forward, face, veer, look, advance, ahead, forward
16. (verb) back
cause to travel backward
Synonyms: indorse, support, gage, bet on, second, back up, plunk for, plump for, stake, game, punt, endorse
Antonyms: front, anterior, current, bring forward, face, advance, look, veer, ahead, forward
17. (verb) back
support financial backing for
Synonyms: indorse, support, gage, bet on, second, back up, plunk for, plump for, stake, game, punt, endorse
Antonyms: front, current, anterior, bring forward, look, veer, advance, face, ahead, forward
18. (verb) back
be in back of
Synonyms: indorse, support, gage, bet on, second, back up, plunk for, plump for, stake, game, punt, endorse
Antonyms: front, anterior, current, bring forward, look, face, advance, veer, ahead, forward
19. (verb) bet on, back, gage, stake, game, punt
place a bet on
Synonyms: second, bet on, gage, back, adventure, plump for, impale, support, pole, plunk for, game, post, hazard, venture, indorse, stake, jeopardize, punt, endorse, back up
Antonyms: front, anterior, current, veer, advance, bring forward, face, look, forward, ahead
20. (verb) back
shift to a counterclockwise direction
Synonyms: indorse, support, gage, bet on, second, back up, plunk for, plump for, stake, game, punt, endorse
Antonyms: front, anterior, current, advance, bring forward, face, look, veer, forward, ahead
21. (verb) back, back up
establish as valid or genuine
Synonyms: second, bet on, gage, foul, clog up, plump for, support, congest, back off, plunk for, game, choke off, back, indorse, stake, choke, clog, punt, endorse, back up, back down
Antonyms: front, current, anterior, face, look, advance, bring forward, veer, forward, ahead
22. (adverb) back
strengthen by providing with a back or backing
Synonyms: indorse, support, gage, bet on, second, back up, plunk for, plump for, stake, game, punt, endorse
Antonyms: front, anterior, current, face, veer, bring forward, advance, look, forward, ahead
23. (adverb) back
in or to or toward a former location
Synonyms: backwards, rearwards, backward, rearward
Antonyms: front, current, anterior, advance, bring forward, look, face, veer, forward, ahead
24. (adverb) back, backward, backwards, rearward, rearwards
at or to or toward the back or rear
Synonyms: backwards, rearwards, back, backward, rearward
Antonyms: front, current, anterior, veer, face, advance, bring forward, look, forward, ahead
25. (adverb) back
in or to or toward an original condition
Synonyms: backwards, rearwards, backward, rearward
Antonyms: front, anterior, current, veer, look, bring forward, face, advance, ahead, forward
26. (adverb) back, backward
in or to or toward a past time
Synonyms: backwards, rearwards, back, backward, rearward
Antonyms: front, anterior, current, bring forward, veer, face, look, advance, ahead, forward
27. (adverb) back
in reply
Synonyms: backwards, rearwards, backward, rearward
Antonyms: front, current, anterior, bring forward, veer, face, advance, look, ahead, forward
28. (adverb) back
in repayment or retaliation
Synonyms: backwards, rearwards, backward, rearward
Antonyms: front, current, anterior, advance, look, bring forward, veer, face, forward, ahead
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Synonyms and Antonyms of back 
