Is it possible to brute-force a WiFi password, since technically there are no limits with login attempts?
If there is any, the MAC address of the attacker device can be changed.
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Brute-forcing a Wi-Fi password, and by extension wireless cracking in general, is a large subject matter in and of itself. Generally speaking, yes, it is certainly possible to brute-force a Wi-Fi password, but there are many things to factor into the equation. Namely, the type of encryption that is used on the wireless network will play a large part in the feasibility of such an attack.
As the question posed is quite broad, the answers you receive will be as well.
As a new member to the security exchange myself, I have found it useful to read the articles in the Help Center about ways to formulate my questions more effectively. I think you will get much better results by asking a more specific question. Perhaps try digging into the following Wikipedia article about wireless cracking that will hopefully generate some more specific questions for you to ask.