adj .
sluggish ; without energy or enthusiasm 활기가 없는 ; 힘이나 열정이 없는

• You've been acting awfully listless today. Are you sure you're feeling well ?
• The children had been dragged to so many museums that by the time they reached the dinosaur exhibit, their response was disappointingly listless.
• Harry's listless prose style constantly threatens to put his readers very soundly to sleep.
  해리의 단조로운 산문체는 그의 책을 읽는 독자들을 아주 곤한 잠에 빠뜨릴 우려가 끊임없이 있다.
• The lettuce looked so listless by the time I got around to making a salad that I threw it out and served tomatoes instead.
  샐러드를 만들려고 꺼내보니, 양상추가 너무나 싱싱하지 않은 것 같아서 모두 내다버리고 대신 토마토를 내놓았다.
• 명사는 listlessness