Bewitching means so charming that you cannot look away. A bewitching smile, bewitching music, utterly bewitching.
It is warmer and more old-fashioned than charming and is used most of faces and of performances. The witch in it is literal, since the word first meant put under a spell.
1adjectivebewitchingSo charming that you cannot look away.
“The singer's bewitching voice held the whole audience silent.”
bewitching is a quality.
From bewitch + -ing.
Etymology from Wiktionary, CC BY-SA