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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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