To be sticky or adhesive; to have a gluey or viscous quality that causes sticking.
納豆はよく混ぜるとどんどん粘る。
Natto becomes increasingly sticky the more you stir it.
こののりは乾くと強く粘るので注意してください。
This glue becomes strongly adhesive when it dries, so be careful.
手にバターがついてベタベタ粘る。
Butter on my hands is sticky and tacky.
To persevere or persist; to stick with something without giving up (e.g., in negotiations or competition).
彼は試験に合格するまで何度も粘った。
He kept at it repeatedly until he passed the exam.
交渉で粘って、こちらの条件を飲ませた。
By persisting in negotiations, we got them to accept our terms.
最後まで粘るチームワークが勝利につながった。
A teamwork that persisted to the end led to victory.