To give in is to stop resisting at last and agree. Give in to pressure, refuse to give in, give in gracefully.
It marks the end of a struggle rather than a change of mind, so people give in reluctantly. In British schools it also means to hand work to a teacher, which is a quite separate use.
1phrasegive inTo finally stop resisting and agree.
“He would not give in until the last of the letters had been answered.”
give in is a phrase.
Also accepted in games: surrender
Practised in Phrasal Verbs