impertinent
good-for-nothing
as much use as a chocolate fireguard
nutil
frustraneous
inutility
uselessly
ineffectual
good for nothing
matterless
jabberwocky
useless as tits on a boar hog
irrelevantly
shand
goodless
waste
not worth salt
not worth a curse
no good
inutilitarian
garbageness
fruitless
unuseful
shvantz
gaum
frou-frou
yesterday's news
pile of poo
worthlessly
dust
insignificancy
flizz
beside the point
pointlessly
not worth a whistle
meaninglessly
unanimated
vacantness
vanity
vacuity
not worth a cress
as much use as a chocolate teapot
upter
drossy
beside the mark
meritless
that and a nickel will buy you a cup of coffee
bubble-brained
offcast
inadeptly