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WordNet
high-keyed

adj. (of persons) excitable

Usage examples of "high-keyed".

I supposed that all high-keyed, creative people must have these highs and lows, but sometimes I didn't know how to deal with them.

He'd been going strong for hours, now, including a rather high-keyed period of combat.

He was a slim, high-keyed young fellow, gone half-bald considerably before his time.