a gymnastic exercise performed starting from a position with the legs over the upper body and moving to an errect position by arching the back and swinging the legs out and down while forcing the chest upright
a person who has suddenly risen to a higher economic status but has not gained social acceptance of others in that class an arrogant or presumptuous person
disapproval You can refer to someone as an upstart when they behave as if they are important, but you think that they are too new in a place or job to be treated as important. Many prefer a familiar authority figure to a young upstart. someone who behaves as if they were more important than they really are and who shows a lack of respect towards people who are more experienced or older (upstart (14-19 centuries))