persistent

B2 · Upper Intermediate

adj. lasting for a long time or happening again and again, especially in an annoying way.

adj. existing or recurring over a prolonged period; often used to describe unpleasant conditions or symptoms.

“She went to the doctor because of a persistent cough that wouldn't go away.”

“The region has suffered from persistent unemployment for over a decade, leading to significant social unrest and migration.”

C1 · Advanced Computing Technical

adj. describing information that stays on a computer even after the power is turned off or a program is closed.

adj. relating to data or a state that survives the process that created it; not stored in volatile memory.

“The app uses a persistent database so your settings are saved for next time.”

“Developers must decide which user preferences require persistent storage and which can be discarded once the session terminates.”

C2 · Proficiency Botany Technical

adj. describing parts of a plant, like leaves or scales, that stay attached instead of falling off naturally.

adj. remaining attached to the plant after the expected time of falling off or after the surrounding parts have withered.

“Some oak trees are known for their persistent leaves that stay brown on the branches all winter.”

“The persistent calyx remains on the fruit long after the petals have fallen, providing a key feature for species identification.”