upstart (n.)
- adventurer
- arriviste
- boldface
- boor
- bounder
- bourgeois
- cad
- churl
- chutzpanik
- clown
- comer
- emigrant
- fledgling
- fountain
- greenhorn
- groundling
- gush
- guttersnipe
- hooligan
- hussy
- immigrant
- intruder
- jet
- lout
- minx
- modern
- modernist
- mushroom
- neologism
- neologist
- neology
- neonate
- newcomer
- nobody
- nouveau-riche
- outsider
- parvenu
- peasant
- pretender
- pup
- puppy
- recruit
- ribald
- rocket
- rookie
- rough
- roughneck
- rowdy
- ruffian
- settler
- skyrocket
- slob
- sprout
- spurt
- squatter
- stowaway
- stripling
- surface
- swaggerer
- tenderfoot
- vulgarian
- whippersnapper
- yokel