tī nai in the phrase tī nai mate, (-‘ia).
1. Be in a coma, stupor, faint.
Kua tī nai mate ‘iōra ‘aia ē, mei te rua ora i muri mai, kua kite ‘aka‘ou ‘aia i te tangata.
He blacked out and it was two hours later that he (came round and) recognised people again.
2. In passive form only. Be ruined completely, wiped out, annihilated.
Kua tī nai mate‘ia rātou nō te kino tā rātou i rave.
They were exterminated completely, so much evil had they perpetrated.