(intransitive) To become loose; to loosen; to relax (a muscle, etc.). / (colloquial) To relax; to act less seriously.

present participle of chuck up

Third-person singular simple present indicative form of chuck up

simple past tense and past participle of chuck up

simple past tense and past participle of fess up

Third-person singular simple present indicative form of fess up

present participle of fess up

(transitive) to cover with cream / (intransitive) to become creamy

Third-person singular simple present indicative form of top up

present participle of top up