IPA: /aʊtˈsteɪ/
KK: /aʊtˈsteɪ/
To remain in a place longer than someone else or longer than is appropriate.
She decided to outstay her friends at the party, enjoying the music and conversation.
Past: outstayed
Past Participle: outstayed
Outstay → It is formed from "out-" (meaning beyond or outside) and "stay" (from Old English "stǣgan", meaning to remain or to stay). The word "outstay" means to remain beyond a certain time or to stay longer than expected.
Think of being 'beyond' ('out-') your expected 'stay' — that's why outstay means to stay longer than intended.
No commonly confused words.