The phrasal verb "let on" is commonly used in informal contexts and is less likely to appear in formal speech or writing. It generally means to reveal or disclose something, typically information or a truth, that was previously hidden or unknown. For example, if someone "lets on" about a secret, they are divulging information that was meant to be kept private. In terms of usage patterns, it is often used conversationally when discussing personal interactions, feelings, or intentions, where someone might be surprised or disappointed that another person revealed something unexpected. Additionally, this phrasal verb might be employed in storytelling or narrative contexts to build suspense or reveal character motivations. It carries a connotation of unintentional or reluctant exposure of information, differentiating it from more deliberate disclosures.
A2
Beginner
1. To reveal or divulge information, often something that is secret or not widely known.
He didn't want to let on that he knew about the surprise party.
She let on that she was considering moving to a different city.
2. To pretend or give a false impression about something.
He let on that he was an expert, but he knew very little about the subject.
Don't let on like you haven't met her before, she knows you well.