twenty first century (adjective) modern: new, up-to-date
Sinonime: avant-garde, coincident,
concomitant,
concurrent, contempo,
contemporary,
current, cutting-edge,
fresh, last word,
late,
latest, latter-day, leading-edge, modernistic, modernized, modish, neoteric, new-fashioned, newfangled,
novel,
now,
present, present-day,
prevailing,
prevalent,
recent,
state-of-the-art*,
stylish, today, twenty- first century, up-to-the-minute, with-it
Antonime: ancient,
antiquated,
obsolete,
old, old-fashioned,
outdated, passe