悲伤的 ：disastrous
distressing
heartbroken
mirthless
rueful
sore
tearful
teary
woeful
快乐的：
beatific
delectable
diverting
festival
gay
gayer
gayest
gladsome
gleesome
happier
happiest
happy
hedonic
joyous
lighthearted
merry
pleased
pleasurable
sunny
宁静的：halcyon
peachful
quiet
serene