time-sensitive

American  

[tahym-sen-si-tiv] / ˈtaɪmˌsɛn sɪ tɪv /

adjective

1. (of a product, document, or information) useful or relevant for only a limited amount of time.

   These time-sensitive papers must be signed immediately.

2. Chemistry. having properties that physically change with the passage of time.

   When stored for prolonged periods, time-sensitive chemicals can become extremely hazardous.

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time-sensitive British  

adjective

1. physically changing as time passes

2. only relevant or applicable for a short period of time

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Etymology

Origin of time-sensitive

First recorded in 1925–30; time ( def. ) + sensitive ( def. )

Example Sentences

Combat search and rescue, or CSAR, missions are considered among the most complex, time-sensitive operations that US and allied militaries prepare for.

From BBC • Apr. 3, 2026

While UPS doesn’t offer pickup or delivery on the holiday, its time-sensitive Express Critical service is available.

From Barron's • Jan. 19, 2026

Sending time-sensitive documents like college applications, check payments, tax returns, insurance appeals and ballots through the mail?

From The Wall Street Journal • Jan. 8, 2026

And it’s always worth watching out for time-sensitive deals and money-saving bundles.

From MarketWatch • Dec. 31, 2025

“Had a time-sensitive dilemma,” I said, “but I managed to figure it out. Sometimes runners-up have good ideas too, you know.”

From "Sir Fig Newton and the Science of Persistence" by Sonja Thomas