ascertain

verbs

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"

ascertain, determine, find, find out

is derived from

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"

ascertain, assure, check, control, ensure, insure, see, see to it

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"

ascertain, check, determine, find out, learn, see, watch

is derived from

learn or discover with certainty

ascertain

is derived from

is a type of (narrower)

get to know or become aware of, usually accidentally

"I learned that she has two grown-up children"; "I see that you have been promoted"