off-key

[ awf-kee, of- ]
/ ˈɔfˈki, ˈɒf- /

adjective

deviating from the correct tone or pitch; out of tune.
Informal. somewhat irregular, abnormal, or incongruous.

Origin of off-key

First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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