let on
B2 informal inseparable intransitive
In simple words
To tell or hint at something you were supposed to keep secret.
Meanings
1 B2
idiomatic
informal
To reveal a secret or something you knew, especially when you had been trying to hide it.
"Don't let on that you've already seen the surprise — just act shocked."
Grammar: inseparable
2 B2
idiomatic
informal
To pretend or give the impression of something.
"He was more upset than he let on."
Grammar: inseparable
Usage notes
Usually used in negative constructions: 'don't let on', 'he didn't let on'. Often followed by a 'that' clause: 'she didn't let on that she knew'. Primarily British English.
Commonly used with
secret truth feelings knowledge plan
Forms
Base
let on
I/you/we/they
3rd person
lets on
he/she/it
Past simple
let on
yesterday
Past participle
let on
have + pp
-ing form
letting on
continuous
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Synonyms
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