na-adjective
inquisitive; questioning; quizzical
Describes a look, expression, or attitude that seems to want to ask something. Often used with 顔, 目つき, or 様子.
彼女は物問いたげな目でこちらを見た。
She looked at me with questioning eyes.
子供は物問いたげに母親の顔を見上げた。
The child looked up at his mother's face inquisitively.
物問いたげ is a more specific compound with 物, emphasizing a look that seems to ask about something; 問いたげ alone is less common.
Compound of 物 (thing) + 問いたげ (seeming to ask), from 問う (to ask) + たげ (suffix indicating appearance).