Synonyms of low-key in English:

low-key


See US English definition of low-key

See UK English definition of low-key

See Spanish definition of mesurado

adjective

1‘the councils' low-key approach had saved them from widespread media hostility’

SYNONYMS
restrained, modest, understated, muted, subtle, quiet, low-profile, inconspicuous, unostentatious, unobtrusive, discreet, circumspect, played-down, toned-down, self-effacing, relaxed, downbeat, easy-going, modulated, softened
informal laid-back
ANTONYMS

ostentatious, showy