Antonyms of adj high-keyed

1 sense of high-keyed

Sense 1
high-keyed -- ((of persons) excitable)

INDIRECT (VIA excitable) -> unexcitable -- (not easily excited; "an unexcitable temperament")

Similarity of adj high-keyed

1 sense of high-keyed

Sense 1
high-keyed -- ((of persons) excitable)
       => excitable (vs. unexcitable) -- (easily excited)