Meaning Can't talk now
Type Acronym
Popularity ★ ★ ★ ★ ★  Popular
Usage Online Only (chat, messaging, e-mail)

CTN means can't talk now. It is a quick way of letting someone know you are too busy to chat. It may also be used in text messaging to let someone know you are currently unable to call him or her.

CTN has diminished in popularity since phones began giving users the option of a text auto response to incoming phone calls. However, it is still used by some when texting and popular for online chat when a user is unavailable.

Updated July 20, 2016
Information from PC.net