Ascertain

Verb

Definition: To find out or determine with certainty.

Synonyms: Discover, Determine, Establish, Confirm

Antonyms: Disregard, Ignore, Overlook, Misconstrue

Examples:

The detective tried to ascertain the truth of the matter.
They conducted experiments to ascertain the cause of the problem.

Mnemonics:

"As certain" - To be sure or certain about something.

Etymology:

Origin:

Late Middle English from Old French 'ascertener', from medieval Latin 'ascertinare', from Latin 'ad-' (to) + 'certus' (certain).

Historical Usage:

The word 'ascertain' has been used since the late Middle English period and has retained its meaning throughout history.

Related Idioms:

Idiom:

"Ascertain the facts"

Explanation:

To determine or establish the true or accurate information.

Misconceptions:

Misconception:

Confusing 'ascertain' with 'assume' or 'guess'.

Explanation:

'Ascertain' involves finding out or determining something with certainty, while 'assume' or 'guess' involve making an inference or estimation without solid evidence.