was proving
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past progressiveof prove.past progressive
Used to describe an ongoing action or continuous state that was happening at a specific time in the past.
proveverb (used with object)to establish the truth or genuineness of, as by evidence or argument.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Deckers Outdoor, in May, said its Ugg Zora line — which has the fluffy interior an Ugg boot in roughly the shape of a ballet shoe — was proving appealing to customers.
From MarketWatch ● Aug. 15, 2026
The next challenge was proving that its lithium level was genuinely unusual rather than normal for a star with similar characteristics.
From Science Daily ● Jul. 16, 2026
That color was proving arduous to re-create affordably, and at scale.
From The Wall Street Journal ● Jun. 18, 2026
The BBC heard from several people that the cost of living was proving a big challenge.
From BBC ● May 19, 2026
It happened because the work at Los Alamos was proving even more difficult than Oppenheimer had expected.
From "Bomb" by Steve Sheinkin
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