He sat and watched her, a quizzical look on his face.quizzicalquiz‧zi‧cal /ˈkwɪzɪkəl/ adjective 
He sat and watched her, a quizzical look on his face.—quizzically /-kli/ adverb
EXAMPLES FROM OTHER DICTIONARIES
- The child gave him a quizzical look.
- And yet their eyes, their lips, a certain shy grin or quizzical cant of an eyebrow, look strangely familiar.
- David urged her on, ignoring her quizzical glance.
- He gave me that quizzical look, as much as to say: You should know by now what that was all about.
- Her face was vaguely familiar, and Floyd suddenly became aware that the Administrator was looking at him with a quizzical smile.
- Jasper gave me a quizzical look.
- The well-dressed patrons raised quizzical eyebrows and exchanged glances on seeing us come in.
COLLOCATIONS FROM THE ENTRY He sat and watched her, a quizzical look on his face.COLLOCATIONS FROM THE CORPUSNOUN
a quizzical expression is one that shows that you do not understand something and perhaps think it is slightly amusinga quizzical look/expression/smile He sat and watched her, a quizzical look on his face.· Her eyes were crookedly set, which gave her a humorous, quizzical expression quite in keeping with her manner and disposition.
· He gave me that quizzical look, as much as to say: You should know by now what that was all about.· Jasper gave me a quizzical look.· He sat back watching her; a quizzical look on his face.· She realised from the quizzical looks that met this further information that she had made matters worse rather than better.· She started giving me quizzical looks.· I gave him the benefit of my quizzical look.
· Eugene Forster had a quizzical smile playing around his mouth.· Her face was vaguely familiar, and Floyd suddenly became aware that the Administrator was looking at him with a quizzical smile.· Blanche looked at Lancaster with a quizzical smile and did not say anything for a full ten seconds.
He sat and watched her, a quizzical look on his face.—quizzically /-kli/ adverb