off-tone (adjective) off-key: not sounding right
Sinonime: advanced, ahead of its time, avant-garde, contemporary, current, cutting-edge, fresh,
futuristic, latest, leading-edge, modernistic, modish,
new, new-fashioned, nontraditional, now, present-day,
revolutionary, state-of-the-art*, stylish, today, twenty-first century, up-to-the-minute
Antonime: concordant,
harmonious, on-key