ascertain

[ as-er-teyn ]
/ ˌæs ərˈteɪn /

verb (used with object)

to find out definitely; learn with certainty or assurance; determine: to ascertain the facts.
Archaic. to make certain, clear, or definitely known.

QUIZZES

CAN YOU GUESS THESE WORDS FROM AROUND THE US?

American English is not always as it appears to be ... get to know regional words in this quiz!
Question 1 of 10
A bet is synonymous with a wager, but what does it mean in New York?

Origin of ascertain

1400–50; late Middle English, variant of assertain, acertain<Middle French acertain- (tonic stem of acertener to make certain), equivalent to a-a-5 + certaincertain

synonym study for ascertain

1. See learn.

OTHER WORDS FROM ascertain

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for ascertain

British Dictionary definitions for ascertain

ascertain
/ (ˌæsəˈteɪn) /

verb (tr)

to determine or discover definitely
archaic to make certain

Derived forms of ascertain

ascertainable, adjectiveascertainably, adverbascertainment, noun

Word Origin for ascertain

C15: from Old French acertener to make certain
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012