Antonyms for ascertain
ˌæs ərˈteɪnas·cer·tain

WiktionaryRate these synonyms:0.0 / 0 votes

1. ascertainverb

   Synonyms:
   discover, establish, determine, learn, work out, find out

2. ascertainverb

   To find out definitely; to discover or establish.

   As soon as we ascertain what the situation is, we can plan how to proceed.

   Synonyms:
   determine, find out, work out, establish, learn, discover

English Synonyms and AntonymsRate these synonyms:3.0 / 2 votes

1. ascertain

   Of human actions or character, detect is used, almost without exception, in a bad sense; discover may be used in either the good or the bad sense, oftener in the good; he was detected in a fraud; real merit is sure to be discovered. In scientific language, detect is used of delicate indications that appear in course of careful watching; as, a slight fluttering of the pulse could be detected. We discover what has existed but has not been known to us; we invent combinations or arrangements not before in use; Columbus discovered America; Morse invented the electric telegraph. Find is the most general word for every means of coming to know what was not before certainly known. A man finds in the road some stranger's purse, or finds his own which he is searching for. The expert discovers or detects an error in an account; the auditor finds the account to be correct. Compare DISCERN.

   See synonyms for HIDE.

   Synonyms:
   descry, detect, discern, disclose, discover, expose, ferret out, find, find out, invent

Complete Dictionary of Synonyms and AntonymsRate these synonyms:0.0 / 0 votes

1. ascertain

   Antonyms:
   guess, conjecture, surmise, suppose, presume

   Synonyms:
   prove, verify, find out, discover, confirm, detect, determine, learn, discern

Matched Categories

1. • Learn
   • Verify

Princeton's WordNetRate these antonyms:5.0 / 1 vote

1. determine, find, find out, ascertainverb

   establish after a calculation, investigation, experiment, survey, or study

   "find the product of two numbers"; "The physicist who found the elusive particle won the Nobel Prize"

   Synonyms:
   influence, detect, recover, settle, ensure, square up, find oneself, hear, shape, get, get hold, fix, find, retrieve, get word, square off, rule, notice, regulate, determine, see, find out, get wind, come up, define, specify, line up, assure, control, encounter, happen, watch, receive, feel, incur, mold, observe, get a line, see to it, make up one's mind, witness, decide, catch out, pick up, obtain, bump, limit, set, learn, regain, chance, discover, insure, check

2. see, check, insure, see to it, ensure, control, ascertain, assureverb

   be careful or certain to do something; make certain of something

   "He verified that the valves were closed"; "See that the curtains are closed"; "control the quality of the product"

   Synonyms:
   guarantee, ensure, project, interpret, verify, look, experience, tick off, visualise, fit, gibe, assure, image, hold, run across, moderate, learn, checker, condition, mark off, run into, discover, escort, stop, examine, pick up, visit, reckon, consider, tally, come across, get a line, hold in, suss out, get wind, check off, check over, take care, match, check up on, control, look into, mark, command, insure, attend, promise, date, realize, go over, train, check, hold back, underwrite, meet, go out, witness, manipulate, fancy, catch, construe, find out, see, discipline, tell, check into, regard, visualize, picture, find, go through, take in, correspond, curb, secure, view, keep in line, arrest, hear, cover, contain, operate, get word, envision, determine, figure, encounter, retard, crack, turn back, reassure, chequer, watch, see to it, break, understand, check out, master, go steady, tick, realise, jibe, agree, delay

3. determine, check, find out, see, ascertain, watch, learnverb

   find out, learn, or determine with certainty, usually by making an inquiry or other effort

   "I want to see whether she speaks French"; "See whether it works"; "find out if he speaks Russian"; "Check whether the train leaves on time"

   Synonyms:
   encounter, ensure, take, read, hold in, jibe, look out, look, experience, tick off, visualise, square up, watch, gibe, assure, image, hold, run across, moderate, look on, learn, checker, condition, check out, run into, discover, regulate, escort, keep an eye on, stop, examine, pick up, memorize, visit, hear, chequer, observe, fix, mold, consider, study, con, tally, come across, regard, define, get a line, suss out, instruct, get wind, check off, check over, take care, watch out, match, check up on, control, look into, mark, insure, attend, date, realize, go over, train, check, hold back, specify, interpret, meet, go out, witness, memorise, set, fancy, catch, decide, construe, find out, see, discipline, square off, limit, visualize, picture, find, catch out, go through, take in, correspond, curb, view, influence, project, watch over, fit, arrest, check into, follow, contain, get word, envision, determine, larn, make up one's mind, retard, crack, turn back, go steady, figure, acquire, see to it, break, understand, delay, teach, reckon, shape, settle, tick, realise, agree, mark off

4. ascertainverb

   learn or discover with certainty

   Synonyms:
   see, find, watch, find out, check, ensure, insure, assure, control, see to it, determine, learn

How to use ascertain in a sentence?

1. Adam Fagan:

   There are no prosecutions, they're not investigated particularly well and there are issues around the definition of what constitutes a hate crime, the implementation of any law in Bosnia is completely stymied by the political system. It's very difficult to ascertain whether the Bosnians are against LGBT [rights] or if they can’t do anything at all really.

2. Clarence House:

   It is not possible to ascertain from whom the Prince caught the virus owing to the high number of engagements he carried out in his public role during recent weeks.

3. Murphy Police:

   It is not known if the two incidents are related or if there is any reason to believe so, investigators are continuing to speak with relatives of the two victims to ascertain any relationship between the two deaths.

4. Steve Cohen:

   I'd certainly vote for it. Whether it's prudent or not is not for me to ascertain, i think it's the right thing to do.

5. The BEA spokesman:

   At this point in time, the BEA is studying the information on the airplane part found in La Reunion, in coordination with our Malaysian and Australian colleagues, and with the judicial authorities, the part has not yet been identified and it is not possible at this hour to ascertain whether the part is from a B777 and/or from MH370.

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