Lilliputian
fiddling
flimsy
footling
fragile
hole-and-corner
hole-in-corner
immaterial
inappreciable
inconsequent
inconsequential
indifferent
light
lightweight
little
nickel-and-dime
niggling
petty
picayune
piddling
piffling
potty
slight
small-time
superficial
tenuous
thin
trivial
casual
homely
humble
humble-looking
humble-visaged
humblest
immomentous
inconsiderable
inessential
inferior
inglorious
innocuous
insignificant
least
low
low-priority
lowest
lowliest
lowly
marginal
mean
meaningless
minor
modest
no great shakes
nonessential
of no account
of no consequence
of no matter
of no significance
plain
poor
secondary
shoestring
simple
small
accidental
crucial
frivolous
harmless
inaccessible
irrelevant
mundane
obscure
uninteresting
unreal
unrelated
unsatisfactory
valueless
worthless
important
flagrant
great