facial expression; look on one's face
Often carries a negative nuance, describing an unpleasant, stern, or suspicious expression.
He stayed silent with a dissatisfied look on his face.
The man was looking this way with a sharp expression.
Common mixed kanji-kana spelling; the reading つらつき is unambiguous.
Full kanji spelling; less common but still seen.
Compound of 面 (つら, 'face') and 付き (つき, 'attached state, appearance'). The reading つら is an older, often rougher word for 'face'.