Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you:
The person who completely doesn't understand this vocab word is Matt (まった). Be sure to take note of the small っ, too.
If you're going to be like this, then I can't take it seriously.
Koichi never asks for anything in return when he helps people.
Condoms aren’t completely safe. My friend was wearing one and got hit by a pickup truck.