sluggish adj.怠惰的(lethargic listless slow)
The snake was sluggish because of the cold weather
indolent adj.懒惰的(lazy slothful)
inertia n.惯性 惰性(laziness indolence)
slug n.慢吞吞的人
sloth n.怠惰 懒惰
slothful adj.偷懒的