Meaning of let in | Babel Free

Definitions

1. To let someone or something come in; to admit someone or something in.
   transitive
2. To divulge one's inner thoughts to (someone), making oneself emotionally vulnerable to them; to open up to (someone).
   transitive
3. To associate with.
   transitive
4. To cheat or victimize.
   UK, obsolete, slang

Examples

“He opened the window to let in the air.”

“So tell me when you're gonna let me in / I'm getting tired and I need somewhere to begin”

“He has also been good enough to recommend to me many tradesmen who are ready to supply these articles in any quantities; each of whom has been here already a dozen times, cap in hand, and vowing that it is quite immaterial when I pay—which is very kind of them; but, with the highest respect for friend Perkins (my scout) and his obliging friends, I shall make some enquiries before "letting in" with any of them.”

“He let me in heavily.”

CEFR level