to rise suddenly, to spring

One who has suddenly gained wealth, power, or other prominence, but either has not received social acceptance or has become arrogant or presumptuous. / The meadow saffron.

Acting like a parvenu. / self-important and presumptuous.

simple past tense and past participle of upstart

Third-person singular simple present indicative form of upstart

present participle of upstart

The quality of being an upstart.

The behaviour or attitudes of an upstart.

(archaic, poetic) Startled awake or into action.

(transitive, archaic) To cause to rise up in startlement.