noun
adj
Freq #27968
Meanings
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1
noun
a person who has risen suddenly to wealth, power, or importance and is regarded as arrogant or presumptuous
The old families dismissed the ambitious newcomer as an upstart.
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2
adj
newly successful or prominent and challenging established people or organizations
The upstart company won customers from several long-established rivals.
Thesaurus
Etymology
From the earlier verb upstart, 'to spring or rise up suddenly,' found in Middle English as upstarten or upsterten and transparently formed from up + start. The noun came to denote someone newly risen in status, often with the implication that the rise outpaced the person's manners or accepted standing.