mid-15c., from Middle English slugge "lazy person" (see sluggard) + -ish. Earlier adjective was sluggi (early 13c.). Related: Sluggishly; sluggishness.
例文
1. Circulation is much more sluggish in the feet than in the hands.
足の循環は手の循環よりずっと遅い。
2.the sluggish black waters of the canal
運河を緩やかに流れる黒々とした川の水
3.This humid heat makes you feel rather sluggish .
この蒸し暑い天気は人をだるくさせる.
4.Don 't be so sluggish .Put yourself together.
そんなだらだらしないで、元気を出して。
5.Statistics paint a sobering picture-unemployment,tight credit,lower home values, sluggish job growth.