English dictionary

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English verb: ascertain

1. ascertain (communication) establish after a calculation, investigation, experiment, survey, or study

SamplesFind the product of two numbers.
The physicist who found the elusive particle won the Nobel Prize.

Synonymsdetermine, find, find out

Pattern of useSomebody ----s something.
Somebody ----s whether INFINITIVE

Narrower (hyponym)admeasure, count, enumerate, gauge, locate, number, numerate, rectify, redetermine, refract, sequence, situate, translate

Verb groupascertain, check, determine, discover, find, find out, learn, see, watch

2. ascertain (cognition) be careful or certain to do something; make certain of something

SamplesHe verified that the valves were closed.
See that the curtains are closed.
Control the quality of the product.

Synonymsassure, check, control, ensure, insure, see, see to it

Pattern of useSomebody ----s that CLAUSE

Broader (hypernym)verify

Narrower (hyponym)card, cinch, control, cover, cross-check, double-check, proof, proofread, spot-check

Verb groupascertain, check, check, check, check off, control, determine, find out, learn, mark, mark off, see, tick, tick off, verify, watch

3. ascertain (communication) find out, learn, or determine with certainty, usually by making an inquiry or other effort

SamplesI want to see whether she speaks French.
See whether it works.
Find out if he speaks Russian.
Check whether the train leaves on time.

ExamplesThey ascertain whether there was a traffic accident

Synonymscheck, determine, find out, learn, see, watch

Pattern of useSomebody ----s whether INFINITIVE

Narrower (hyponym)test

Verb groupascertain, ascertain, assure, check, control, determine, ensure, find, find out, insure, see, see to it

4. ascertain (cognition) learn or discover with certainty

ExamplesThey ascertain that there was a traffic accident

Pattern of useSomebody ----s that CLAUSE

Broader (hypernym)discover, find out, get a line, get wind, get word, hear, learn, pick up, see

Narrower (hyponym)price

Based on WordNet 3.0 copyright © Princeton University.
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