sluggish

adjective

slug·​gish ˈslə-gish 

1

: averse to activity or exertion : indolent

also : torpid

2

: slow to respond (as to stimulation or treatment)

3

a

: markedly slow in movement, flow, or growth

b

: economically inactive or slow

sluggishly adverb

sluggishness noun

Synonyms

• slow
• leisurely
• lagging

Examples of sluggish in a Sentence

The game picked up after a sluggish start.

the sluggish pace of the project is worrisome

Recent Examples on the Web

Abiotic sulfide production at low temperatures is extremely sluggish, according to Tice. —Sharmila Kuthunur, Space.com, 3 Oct. 2025

Clot formation is a health risk arising from sluggish blood flow through the veins. —Bryant Stamford, Louisville Courier Journal, 2 Oct. 2025

The company vowed to review its operations, including sluggish international markets. —Alexander Coolidge, Cincinnati Enquirer, 2 Oct. 2025

China's official gauge for manufacturing activity showed a smaller-than-expected contraction in September as Beijing intensified its efforts aimed at curbing industrial overcapacity amid sluggish domestic demand and global trade disruptions. —Anniek Bao, CNBC, 1 Oct. 2025

Word History

First Known Use

15th century, in the meaning defined at sense 1

Kids Definition

sluggish

adjective

slug·​gish ˈsləg-ish 

: slow in movement or reaction by habit or condition

sluggishly adverb

sluggishness noun

Medical Definition

sluggish

adjective

slug·​gish ˈsləg-ish 

: markedly slow in movement, progression, or response

sluggish healing

sluggishly adverb

sluggishness noun