On which no rent is payable.

Without paying rent.

present participle of live rent free in someone's head

past participle of live rent free in someone's head

Third-person singular simple present indicative form of live rent free in someone's head

(US, idiomatic) To be a focus of a person's thoughts, with that person having no control over this situation.

(colloquial) To be the perpetual focus of someone's thoughts, without knowing or desiring it.

Third-person singular simple present indicative form of live rent-free in someone's head

present participle of live rent-free in someone's head

simple past tense and past participle of live rent-free in someone's head