← Back to sluggishness
Full Level C2+ →
sluggishness Etymology Atlas
the state of being slow, dull, or lacking energy Pro
Word
Root
Affix
Tap any word to open its Atlas. Pinch to zoom, drag to pan.
sluggishness is a Level C2+ word — Pro only
Pro unlocks the Etymology Atlas for levels A2–C2 — plus FSRS-5 spaced repetition, mastery tracking, and the activity dashboard.