self-deprecating
adjective /ˌself ˈdeprəkeɪtɪŋ/
  /ˌself ˈdeprəkeɪtɪŋ/
 - done in a way that makes your own achievements or abilities seem unimportant自我贬低的;自谦的 - He gave a self-deprecating shrug.他自谦地耸耸肩。 
 Collocations DictionarySelf-deprecating is used with these nouns:- humour
- shrug
- wit
- …
 
- He gave a self-deprecating shrug.