1 done alone, without other people 独力完成的: Writing novels is a solitary occupation. 写小说是一件独自工作的职业。

2 (used about a person or an animal) enjoying being alone; frequently spending time alone （指人或动物）喜欢独处的，经常独来独往的: She was always a solitary child. 她一向是个生性孤僻的孩子。

3 (only before a noun 只用于名词前) one on its/his/her own with no others around 独自一人的: a solitary figure walking up the hillside 一个孤单的身影沿山坡步行而上 [SYN] lone 同义词为lone

4 (only before a noun 只用于名词前) (usually in negative sentences or questions 通常用于否定句或疑问句) only one; single 唯一的；单一的: I can't think of a solitary example (= not even one). 我一个例子也想不出来。