IDK.
In plain English, “IDK”: I don't know.
What does IDK mean?
For “IDK”, this entry covers the following meaning: I don't know.
See how it lands.
Original examples written for this entry, not quotations from the sources.
When my friend asked which movie to watch, I just replied, "IDK."
She sent a text about the meeting time, and I answered, "IDK."
The right word.
The right moment.
Choose this wording when the meaning above fits what you intend to say. Give the reader enough surrounding context to follow the example; if clarity matters more than the shorthand, use the plain-English wording instead.
Avoid assuming that a label reveals somebody’s motives or private behavior. If you are unsure how your words will be understood, explain the situation directly and ask a clarifying question rather than relying on the expression alone.
Not quite the same as…
Other readings
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A little backstory.
This automated entry does not establish a first coinage. Consult the linked references for documented history.
Still wondering?
How can I check whether this meaning of “IDK” fits?
Substitute the plain-English meaning into the entire sentence, as in the examples. Keep the surrounding situation in view. If the result does not make sense, ask for clarification rather than assuming this is the intended reading.
How can I make my own message clearer?
Add the missing context or choose a direct description of what you mean. Read the whole message back before sending it, especially if another person could take the label differently.
Sources & checks
Meaning and factual notes are informed by the references below. Examples and usage advice are original editorial writing. A source documents use; it does not measure current popularity.
- IDK — English entry, revision 93603386 ↗Wiktionary contributors · checked 20 Oct 2026Supports: summary; meaning; partOfSpeech