(transitive, intransitive) To learn (about something) by reading.

(computing, on a keyboard) page up (used to scroll up in a window)

(transitive) To destroy by ripping. / (transitive, slang) To move quickly or violently upon.

plural of goof-up

(military, of a Humvee or other combat vehicle) Having had its armor upgraded.

Third-person singular simple present indicative form of seize up

present participle of seize up

simple past tense and past participle of seize up

plural of muscle-up

Third-person singular simple present indicative form of muscle up