clumsily; with clumsy hands
Describes doing something in a fumbling, unsteady, or suspiciously awkward manner, often implying lack of skill or nervousness.
He was using the kitchen knife with clumsy hands.
I flip through the documents clumsily.
Standard kanji spelling using 手つき.
Variant using 手付き; both spellings are used.
A set phrase combining 怪しい (suspicious, dubious) with 手つき (hand movements) and the particle で, literally 'with suspicious hand movements', used adverbially to mean 'clumsily'.