Slang strange, weird, unusual, abnormal, suspicious, etc.
Origin of hinky; from uncertain or unknown; perhaps slang hincty, snobbish ; from uncertain or unknown; perhaps
adjectivehin·ki·er, hin·ki·est Slang
So peculiar as to arouse suspicion; curiously odd: “If a person looks a little hinky, they'll send him away” (Paul Theroux).
Origin of hinkyVariant of African American Vernacular English hincty, hinkty, wary, of unknown origin.