Tsk may refer to any of the following:

  1. Tsk is an abbreviation sometimes used for task.

  2. Sounds tsk or tsk-tsk denote disapproval; similar to tut or tut-tut. Below is an example of how this could be used in chat.

User 1: How do you format a drive?User 2: You’re a technician and you don’t know how to format a drive? User 1: Yeah I know. :(User 2: Tsk-tsk!

Chat terms, Pfft