subtweetnoun [ C ]
uk/ˈsʌb.twiːt//ˈsʌb.twiːt/a tweet (= a message on Twitter™ ) in which you mention a person but do not use @ before their name so they do not see what you have written:
Subtweets can come across as bitchy, bitter, or aggressive.
subtweetverb [ I or T ]
uk/ˌsʌbˈtwiːt//ˌsʌbˈtwiːt/to mention a person on Twitter™ without using @ before their name so they do not see what you have written :
Here's an example of when I subtweeted someone and it backfired.
subtweeting
noun [ U ] uk/ˌsʌbˈtwiː.tɪŋ//ˌsʌbˈtwiː.tɪŋ/
Subtweeting is the internet equivalent of talking about someone behind their back.