na-adjective, noun
ashamed; embarrassed; blushing with shame
Literary and somewhat formal expression for feeling deeply ashamed, often used in set phrases like 汗顔の至り (to one's great shame). Not an everyday casual word.
自分の未熟さに汗顔の思いだ。
I feel deeply ashamed of my own immaturity.
その失敗はまさに汗顔の至りです。
That failure is truly a matter of great shame.