i-adjective
a little embarrassing; slightly embarrassed
Describes a mild, often self-conscious embarrassment, less intense than 恥ずかしい. The prefix こっ softens the feeling.
人前で話すのは、やっぱりこっ恥ずかしい。
Speaking in front of people is, after all, a little embarrassing.
褒められると、こっ恥ずかしくて顔が赤くなる。
When I get praised, I feel slightly embarrassed and my face turns red.
i-adjective
extremely embarrassing; extremely embarrassed
Used ironically or emphatically to mean the opposite of sense 1: very embarrassing. Often in casual, exaggerated speech.
あんな失敗をして、こっ恥ずかしくて穴があったら入りたいよ。
After making a mistake like that, I'm so embarrassed I wish I could sink into the ground.