のこのこ

adverb, adverb taking the 'to' particle

unconcernedly; nonchalantly; shamelessly; brazenly

Describes someone appearing or acting in a situation where they should feel embarrassed or unwelcome, but they show no sign of shame or hesitation. Often used with verbs like 現れる, 来る, or 出てくる.

• 彼かれは遅ち刻こくしたのに、のこのこと会かい議ぎ室しつに入はいってきた。

  Even though he was late, he walked into the meeting room as if nothing had happened.

• あんなに怒おこられたのに、またのこのこ遊あそびに来きた。

  Even after being scolded so much, he shamelessly came over to hang out again.