Word: upstart
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.
To rise suddenly, to spring Example: And his unready weapons gan in hand to take.
Acting like a parvenu.
Self-important and presumptuous.
You can find a list of possible crossword clues for UPSTART below.