prove out
C1 neutral both both
In simple words
to show something is right by checking or trying it
Literal meaning: Literally, to prove something fully or outwardly.
Meanings
1 C1
idiomatic
neutral
to test something and show that it works as expected
"The team spent six months proving out the new battery design."
Grammar: separable
2 C1
idiomatic
neutral
to be shown by evidence or testing to be correct or effective
"Their early assumptions proved out once the full data arrived."
Grammar: inseparable
Usage notes
Common in engineering, business, manufacturing, and data analysis. In some contexts, the subject is the thing tested: 'The design proved out.'
Commonly used with
the model the concept the design assumption the numbers strategy
Forms
Base
prove out
I/you/we/they
3rd person
proves out
he/she/it
Past simple
proved out
yesterday
Past participle
proved out
have + pp
-ing form
proving out
continuous
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Synonyms
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