1. subtweet - Noun
2. subtweet - Verb
subtweet (plural subtweets)
(social media, neologism) A tweet that refers to another user without tagging their name in the message, so that the user being talked about is not automatically notified.
(social media, neologism) To post a message of this kind.
Hypernym: vagueblog
Coordinate term: vaguebook
(by extension, neologism, transitive) To speak obliquely about (a person).
Source: en.wiktionary.org