平気 へいき
heiki

Noun
na-Adjective

1. cool; calm; composed; unconcerned; nonchalant; unmoved; indifferent

かれ平気 へいきでうそをつく。
karewa hēkide usō tsuku.
He has no scruples about lying.
na-Adjective

2. all right; fine; OK; okay

Colloquial