When people say "hint hint," it is a subtle way of suggesting something without directly stating it. It is often used to imply or draw attention to a particular idea or message without being too explicit.
You could flirt, it gives a hint without actually saying anything. Try a wink: ;-)
it means to suggest something but not saying it
It is a sound someone may make, a way of agreeing with or acknowledging something without saying so. But since they're not using words, it can also hint at disinterest.
you hint it to them very slowly across time
You express your feelings toward him but not too much
A girl may hint that she likes you without saying it directly by touching your arm and having extended eye contact with you.
He is inferring something or foreshadowing something.
"To allude" means to hint at something, or refer to something indirectly, often referencing something well-known. "She alluded to the Titanic when she said their vacation was like hitting an iceberg and sinking," would be an example.
something
have sex with his woman or man.
If there was such a hint it should mean something only to the person that set the hint. The password should not be guessable from the hint.