"sluggishness" in the noun sense
1. lethargy, lassitude, sluggishness
a state of comatose torpor (as found in sleeping sickness)
2. sluggishness
the pace of things that move relatively slowly
"the sluggishness of the economy"
"the sluggishness of the compass in the Arctic cold"
3. languor, lethargy, sluggishness, phlegm, flatness
inactivity showing an unusual lack of energy
"the general appearance of sluggishness alarmed his friends"
Source: WordNet® (An amazing lexical database of English)
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