Word Games Pro Dictionary

ascertain

verb

be careful or certain to do something; make certain of something

Quick reference

Word Facts

Word length
9
Starts with
A
Ends with
N
Contains
SC
Scrabble score
11
Database source
OEWN 2025 Core

How it sounds

Pronunciation

ˌæsəˈteɪn

Listen

Audio Pronunciation

Audio pronunciation is unavailable for this word.

Meaning

Definitions

verb

  1. be careful or certain to do something; make certain of something

    “He verified that the valves were closed”

verb

  1. learn or discover with certainty

verb

  1. establish after a calculation, investigation, experiment, survey, or study

    “find the product of two numbers”

verb

  1. find out, learn, or determine with certainty, usually by making an inquiry or other effort

    “I want to see whether she speaks French”

In context

Example Sentences

He verified that the valves were closed
See that the curtains are closed
control the quality of the product
find the product of two numbers
The physicist who found the elusive particle won the Nobel Prize
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

Similar words

Synonyms

Scroll to Top