"quizzical" in the adjective sense
1. mocking, teasing, quizzical
playfully vexing (especially by ridicule
"his face wore a somewhat quizzical almost impertinent air"- Lawrence Durrell
2. questioning, quizzical
perplexed (as if being expected to know something that you do not know
"he had a quizzical expression"
Source: WordNet® (An amazing lexical database of English)
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