Antonyms for "in groove" include the opposite of being in the flow and rhythm of something. Some antonyms could be "out of place," "disconnected," "out of sync," "uncoordinated," "awkward," or "incompetent." These words describe a lack of confidence and the inability to perform a task effectively, not being in line with the surroundings or situation. Being "in groove" means being in harmony with the environment around you, so the antonyms convey a sense of disharmony and awkwardness. It's important to be aware of the antonyms to gain an understanding of what to avoid when trying to get in the groove of something.