Sluggish

вялый

vjalyj

(habitually idle and lazy; slothful; dull; inactive)

заторможенный

zatormožennyj

(characteristic of a sluggard; dull; stupid; tame; simple)

инертный

inertnyj

(having no power to move oneself or itself; inert)

лени́вый

lenívyj

(habitually idle and lazy; slothful; dull; inactive)

ме́дленный

médlennyj

(slow; having little motion)

медли́тельный

medlítelʹnyj

(habitually idle and lazy; slothful; dull; inactive)

неповоротливый

nepovorotlivyj

(having no power to move oneself or itself; inert)