Real Dictionary

-off in American English
a contest of skill in a (specified) activity or field, esp. one in which finalists compete, as by preparing their own version of a recipe, to determine a champion
suffix: a suffixal use of the adverb off, forming nouns that denote competitions, esp. between the finalists of earlier competitions or as a means of deciding a tie

off
preposition: If something is taken off something else or moves off it, it is no longer touching that thing.

off in Accounting
adjective: If an amount or figure is off, it differs from or is inconsistent with the correct amount.

off in American English
adverb: so as to be no longer supported or attached

off in American English 1
so as to be or keep away, at a distance, to a side, etc.

off in American English 2
offered

off in British English
adverb: so as to be deactivated or disengaged
preposition: used to indicate actions in which contact is absent or rendered absent, as between an object and a surface

off. in American English
abbreviation: offered