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. 在推文中提及某个人名时不@这个名字的做法可以显得充满恶意、愤愤不平、咄咄逼人等等。

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. 这里有一个例子，我在推文中提及了某个人名但没有@这个名字，结果事与愿违。