汗顔 is read as かんがん (kangan) and means ashamed.
かんがん
kangan
あせ
gulp
あせだく
dripping with sweat
あせみず
profuse sweat
あせばむ
to be sweaty
あせみずながす
to sweat and slave
どうがん
child's face
まるがお
round face
じぞうがお
gentle and round face
まるばあさがお
common morning glory (Ipomoea purpurea)
ぐんばいひるがお
beach morning glory (Ipomoea pes-caprae)
ぎょくがん
imperial face
おんがん
kindly face