Solitary

單獨 /单独

dāndú

(performed, passed, or endured alone)

孤單 /孤单

gūdān

(single; individual; sole)

孤零零

gūlínglíng

(single; individual; sole)

獨居 /独居

dújū

(living alone or being by oneself)

獨自 /独自

dúzì

(performed, passed, or endured alone)

獨處 /独处

dúchǔ

(not much visited or frequented; remote from society)

隱士 /隐士

yǐnshì

(one who lives alone)