1 (BrE also for ever) used to say that a particular situation or state will always exist:
I'll love you forever! * After her death, their lives changed forever. * Just keep telling yourself that it won't last forever.
2 (BrE also for ever) (informal) a very long time:
It takes her forever to get dressed.
3 (spoken) used with verbs in the progressive tenses to say that sb does sth very often and in a way that is annoying to other people:
She's forever going on about how poor they are.
