small
smaller
smallest (>most)
smallness (>attribute)
low (>position)
lower (>relative)
under
lowest (>most)
bottom
less (>relation)
reduced
least
lesser
minus
diminished
minimum
inferior (>quality)
secondary
minor
deficient
subordinate
second-rate
sub
unimportant
below par
disadvantage
commonalty
subordinate
shortcoming
deficiency
imperfection
short (>height)
shorter
shortest
contract (>size)
be upstaged
take a back seat