Meanings of upstart in English

Wealthy person whose fortunes are newly acquired, and who is therefore perceived to lack the refinement of those who were raised wealthy.

Characteristic of someone who has risen economically or socially but lacks the social skills appropriate for this new position.

A gymnastic exercise performed starting from a position with the legs over the upper body and moving to an erect position by arching the back and swinging the legs out and down while forcing the chest upright.