engari mō tēnā
1. not a chance! there's no way I'll do that! not likely! I don't think so! no way! - an idom used to emphatically disagree with a statement.
(Te Kōhure Textbook (Ed. 2): 126;)
E Wini, māu taku reta e tuhi, nē? Engari mō tēnā! Māu tonu e tuhi. / Wini, you will write my letter, won't you? Not on your life! You write it yourself.
2. that's not right, no way was it done like that - an idiom to criticise some action.
Engari mō tēnā. Kore rawa au i kite i aku pakeke e mahi pērā ana (HKK 1999:57). / That's not right. I have never ever seen my elders do it hat way.