(countable) That which annoys. / (countable) An act or instance of annoying. / (uncountable) The psychological state of being annoyed or irritated.

(computing, slang) A bot within an IRC channel that sends annoying messages to online participants.

The quality of being annoying.

In an annoying manner.

plural of annoyance

plural of annoyer

One who annoys.

(computing, informal) Software that annoys the user, as by displaying constant advertisements or reminders to register.

plural of annoybot

(obsolete) annoying