名詞 downer:

1. a drug that reduces excitability and calms a person
   同義詞：sedative, sedative drug, depressant

形容詞 down:

1. being or moving lower in position or less in some value
   同義詞：down
2. becoming progressively lower
   同義詞：down
3. understood perfectly
   同義詞：down, down pat, mastered
4. extending or moving from a higher to a lower place
   同義詞：down, downward
5. being put out by a strikeout
   同義詞：down
6. lower than previously
   同義詞：depressed, down
7. shut
   同義詞：down
8. not functioning (temporarily or permanently)
   同義詞：down
9. low in spirits
   同義詞：blue, depressed, dispirited, down, downcast, downhearted, down in the mouth, low, low-spirited

1. What a downer that guy is!
   那家伙多讓人泄氣呀！

down.er

n.Slang （名詞）【俚語(yǔ)】
A depressant or sedative drug, such as a barbiturate or tranquilizer.
鎮(zhèn)定藥：抑制藥，如巴比妥類藥物或安定藥
A depressing experience or predicament.
沮喪的：令人沮喪的經(jīng)歷或處境