A small, sweet baked treat; another spelling of 'cookie,' often referring to a person who is somewhat foolish or unreliable.
From Dutch 'koekje' (little cake), which entered English in the 17th century through trade with the Dutch. The alternative spelling 'cookie' and 'cooky' both represent anglicizations of this word.
The word 'cooky' shows how one Dutch word spawned two different English spellings that compete even today—'cooky' is now mostly old-fashioned, but you'll still see it on vintage recipe boxes.
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