noun, noun or participle which takes 'suru', intransitive verb
decrease in level; deterioration; decline
Wasei-eigo from 'level down'. Used for a drop in skill, quality, performance, or status. Often contrasted with レベルアップ.
wasei-eigo (Japanese-coined English), from level down
Antonyms: レベルアップ
最近、彼のプレイがレベルダウンしている。
His play has been declining lately.
このアップデートでゲームの難易度がレベルダウンした。
The game's difficulty level decreased with this update.