plural of flare-up

(intransitive) To burn brightly again. / (intransitive) To become more intense suddenly. / (intransitive, sometimes with “out” instead of “up”) To burst out suddenly, as in anger.

Third-person singular simple present indicative form of pump up

present participle of pump up

simple past tense and past participle of belly up

Third-person singular simple present indicative form of belly up

present participle of belly up

Used other than figuratively or idiomatically: see scale, up. / To increase the size of something whilst maintaining proportion. / To change a process in order to allow for greater quantities.

plural of up quark

(transitive, informal) To construct in a shoddy, makeshift manner.