ascertain
1 ENTRIES FOUND:
ascertains;
ascertained;
ascertaining
ascertains;
ascertained;
ascertaining
Britannica Dictionary definition of ASCERTAIN
[+ object]
formal
:
to learn or find out (something, such as information or the truth)
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They were unable to ascertain [=(more commonly) determine] the cause of the fire.
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The police are now attempting to ascertain his whereabouts. [=to find out where he is]
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Her doctors have been unable to ascertain [=find out] why she is ill. = Her doctors have been unable to ascertain the cause of her illness.
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The information can be ascertained by anyone with a computer.
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The cause of the fire was not readily/easily ascertainable.
