(intransitive) To reserve a period of time to do something.

Alternative form of faultfinding. / The investigation and location of faults in machinery and equipment.

Show to be not good enough.

Third-person singular simple present indicative form of fuck around and find out

(euphemistic) To urinate or defecate or to seek relative privacy for that purpose; to relieve oneself, particularly outdoors.

(idiomatic) To grow in confidence in a new situation as one gains experience.

(idiomatic) To feel compassionate, especially in order to forgive someone or to be willing to help them in some way.

(US, informal) To meet with hospitality; to be welcome.

(idiomatic) To become willing or able to talk or otherwise express one's opinions.

(idiomatic, sports) To suddenly achieve an extra burst of athletic performance, especially after a sustained period of competitive exertion. / (idiomatic, by extension) To achieve enhanced performance.