frail
a bit
a la sourdine
a little
anemic
asthenic
barely
bloodless
by a hair
by an ace
cachectic
chicken
cowardly
daintily
debilitated
decrepit
delicately
dimly
drained
drooping
droopy
dull
effeminately
effete
enervated
etiolated
ever so little
exhausted
exiguously
failing
faint
faintish
faintly
feeble
feebly
flabby
flaccid
flimsy
floppy
fragile
gently
gone
gutless
hardly
healthless
hushedly
imbecile
weaklier
weakliest
biweekly
meekly
obliquely
sleekly
uniquely
weekly
hardy
strong
vigorous