raru ki tai
1. (noun) serious problem - a problem that can not be easily remedied.
He punua raru noa iho tērā - he raru ki uta. Tēnā ia ko tēnei, he raru ki tai. Kāore he putanga, kāore he rerenga e ora ai te tangata (HJ 2012:22). / That was just a small problem - a minor one. But this one, it's a serious problem. There's no way out, no escape for a person to recover.