The term downtrend refers to a continuous decline or decrease in a particular situation or trend. In contrast, the antonyms or opposites of this word could indicate improvement or growth in a situation or trend. Some antonyms for downtrend might include an upswing, improvement, growth, progress, and advancement. These words indicate a positive trend, and may be used to describe economic, political, or social situations that are on the rise. Other possible antonyms for downtrend could include stabilization, consistency, and plateau, which suggest that a trend is leveling off and not experiencing further decline or growth.