Word.ws English Dictionary

let in on

let in on verb: to disclose or tell (a secret) to (someone); to share (privileged information) with (someone); to inform (someone) of (a secret). See Usage notes below.

Verb

let in on (third-person singular simple present lets in on, present participle letting in on, simple past and past participle let in on)

  1. (ditransitive) To disclose or tell (a secret) to (someone); to share (privileged information) with (someone); to inform (someone) of (a secret). See Usage notes below.
    • Do you think we should let him in on the shortcut?
    • If this is a joke, please let me in on it.

Forms of let in on

third-person singular presentlets in on
present participleletting in on
past participlelet in on
pastlet in on

Questions about let in on

What does let in on mean?
Let in on means to disclose or tell (a secret) to (someone); to share (privileged information) with (someone); to inform (someone) of (a secret). See Usage notes below.
What part of speech is let in on?
Let in on is a verb.
What is the past tense of let in on?
The past tense of let in on is let in on.

Words near let in on in the dictionary

  1. let he who is without sin cast the first stone
  2. let her rip
  3. let him that is without sin cast the first stone
  4. let him who is without sin cast the first stone
  5. let in
  6. let in on
  7. let into
  8. let it all hang out
  9. let it alone
  10. let it be
  11. let it be known

Source and license

Adapted from Wiktionary: let in on (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “let in on.” Word.ws, https://word.ws/let_in_on. Based on Wiktionary, CC BY-SA 4.0.