This is the 2462nd most frequent Chinese word.
忍不住
Unable to resist; can't help it.
Description of an involuntary emotional reaction upon witnessing a distressing situation.
我看到他这么伤心，忍不住流下了眼泪。
When I saw him so sad, I couldn't help but shed tears.
Expression of an involuntary reaction to humor.
她听到好笑的笑话，忍不住笑了出来。
She couldn't help but laugh out loud when she heard the funny joke.
Conveying an irresistible temptation to act due to an attractive stimulus.