impuissant
ineffective
ineffectual
unable
acarpous
aimless
anemic
arid
asexual
asthenic
barren
blank cartridge
bloodless
careless
castrated
castrato
celibate
chicken
childless
cold
cowardly
crippled
debilitated
desert
desolate
disabled
drained
dried-up
drooping
droopy
dry
dud
dull
easy
easygoing
effete
emasculate
emasculated
enervated
enfeebled
etiolated
eunuch
eunuchized
exhausted
faint
faintish
fallow
featherweight
feckless
feeble
flabby
flaccid
desperate
futile
helpless
hopeless
insane
irrational
senseless
speechless
unavailing
unreasoning
useless
vindictive