/ ˈslʌgɪʃ; NAmE / adjective
moving, reacting or working more slowly than normal and in a way that seems lazy :
sluggish traffic
a sluggish economy
the sluggish black waters of the canal
He felt very heavy and sluggish after the meal.
► slug·gish·ly adverb
► slug·gish·ness noun [ U ]
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WORD ORIGIN
late Middle English : from the noun slug or the verb slug (see sluggard ) + -ish .