pretentious
Babbitt
Philistine
Young Turk
adventurer
arriviste
bob up
boldface
boor
bounder
bourgeois
bourgeois gentilhomme
brazenface
break water
bright young man
cad
churl
chutzpanik
clown
comer
emigrant
epicier
fledgling
float up
fly up
fountain
gate-crasher
greenhorn
groundling
gush
guttersnipe
hooligan
hussy
ill-bred fellow
immigrant
intruder
jet
jump up
leap up
looby
lout
low fellow
malapert
minx
modern
modern generation
modern man
modernist
modernizer
mucker
gymnastic exercise
upstarted
upstarting
upstarts
brat
bully
charlatan
hypocrite
interloper
rabble
scoundrel
usurper