Definition of: then

(then) adverb
1. At that time.
2. Soon or immediately afterward; next in space or time.
3. At another time: often introducing a sequential statement following now, at first, etc.
—conj.
1. For that reason; as a consequence; accordingly.
2. In that case: I will then, since you won't.
—adjective Being or acting in, or belonging to, that time: the then secretary of state.
—noun A specific time already mentioned or understood; that time. [OE thanne]