abbreviation
IDK
eye-dee-KAY
IDK (abbreviation) means used in messages and online to say that you do not know something or have not made up your mind. Example: “idk what time it starts, let me check.”
abbreviation
1
informal, texting Used in messages and online to say that you do not know something or have not made up your mind.
"idk what time it starts, let me check."
"IDK, maybe we should just stay in."
How to use IDK
Learner’s notesIn plain EnglishA short way of typing I don't know.
When to use it
Very informal; standard in texts and chat, out of place in formal email.
Memory tip
IDK often softens a statement rather than answering a question, much like the spoken filler I dunno.
Trace the full origin ↓
Common pairings
idk tbh
idk why
idk maybe
idk yet
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Fill the gap
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_____ what time it starts, let me check.
Etymology
An initialism of the phrase I don't know.
Synonyms
View more →Related words
Frequently asked questions
What does IDK mean?
It stands for I don't know. It answers a question you cannot answer, and it is also used as a soft hedge before an opinion, as in idk, it just felt off.
What is the difference between IDK and IDC?
IDK means you lack the information; IDC means you have no preference. If someone asks where you want to eat, idk means you cannot decide and idc means anywhere is fine.
Is IDK rude in a work message?
On its own it can look careless. Writing I'm not sure, I'll find out is barely longer and shows you intend to follow up, which matters more than the abbreviation itself.
What is the meaning of IDK?
"IDK" (abbreviation) means used in messages and online to say that you do not know something or have not made up your mind.
