I. ˈ ̷ ̷ˌ ̷ ̷ noun
Etymology: off (III) + beat
: the part of a musical measure other than the principally accented one — compare downbeat
II. ˈ ̷ ̷| ̷ ̷ adjective
Etymology: from the phrase off beat
: diverging from the main stream of current fashion : unconventional , unorthodox
offbeat advertising
offbeat style of comedy