The definition of aw shucks is a type of behavior that is characterized by appearing or sounding shy, socially awkward or unsophisticated.
(adjective)An example of aw shucks is something you would say when you dropped a glass, or something you would say when someone gave you a compliment you weren't sure you deserved.
See aw-shucks in Webster's New World College Dictionary
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adjective
See aw-shucks in American Heritage Dictionary 4
adjective