a. 不愉快的

[ adj ]
causing sad feelings of gloom and inadequacy
<adj.all>
the economic outlook is depressingsomething cheerless about the room
a moody and uncheerful person
an uncheerful place

Cheerless \Cheer"less\, a.
Without joy, gladness, or comfort. -- {Cheer"less*ly}, adv.
-- {Cheer"less*ness}, n.

My cheerful day is turned to cheerless night.
--Spenser.

Syn: Gloomy; sad; comfortless; dispiriting; disconsolate;
dejected; melancholy; forlorn.