noun
1. inactivity; showing an unusual lack of energy
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the general appearance of sluggishness alarmed his friends
• Derivationally related forms: ↑phlegmatic (for: ↑phlegm), ↑phlegmatical (for: ↑phlegm), ↑sluggish, ↑lethargic (for: ↑lethargy), ↑languorous (for: ↑languor)
• Hypernyms: ↑inactiveness, ↑inactivity, ↑inertia
2. a state of comatose torpor (as found in sleeping sickness)
• Hyponyms: ↑hebetude
3. the pace of things that move relatively slowly
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the sluggishness of the economy
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the sluggishness of the compass in the Arctic cold
• Derivationally related forms: ↑sluggish
Useful english dictionary. 2012.