I. adverb
Etymology: Middle English than, then then, than, from Old English thonne, thænne; akin to Old High German denne then, than, Old English thæt that Date: before 12th century at that time,
2. soon after that ; next in order of time , following next after in order of position, narration, or enumeration ; being next in a series , in addition ; besides ,
3. a. in that case , (2) — used after but to qualify or offset a preceding statement
II. noun
Date: 14th century
that time ,
III. adjective
Date: 1584
existing or acting at or belonging to the time mentioned