Idk Meaning: Know the Usage and Meaning of Idk

Idk is one of those abbreviations which is used in our everyday lives. It is the most informal way of saying ‘I don’t know’. Idk is one of those words that individuals who aren’t very tech-savvy may struggle to understand. But, idk has been used as a part of our communication for a very long time, so it is one of the most commonly used abbreviations in our internet and messaging language.

Meaning of Idk

The term idk refers to the phrase ‘I don’t know’. Idk is most commonly used in informal ways of communication like text messages, WhatsApp messages, or other kinds of electronic communication. It can be written either in all capital letters or all small letters.

Usage of Idk

Idk is the most informal way of saying ‘I don’t know’. It is used in informal communication. There are no hard and fast rules for writing idk. It can be written as IDK or Idk or idk. Generally, when the abbreviations are written in all capital letters, it indicates that you want the other person to emphasise or amplify the term idk. If you are formally using the term, then make sure to use it as per your choice consistently.

To know the proper usage of the term, refer to the examples provided below.


  • Idk what is wrong with this man.
  • I will join you guys for the party but IDK if Shrestha is joining.
  • Idk what you exactly mean by this.

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