elastic
tough
able to adapt
adaptable
adjustable
alterable
alterative
anemic
asthenic
bloodless
changeable
checkered
chicken
cowardly
debilitated
drooping
droopy
dull
effete
etiolated
ever-changing
faint
faintish
feeble
flabby
flaccid
flexible
flimsy
floppy
fluid
gone
gutless
imbecile
impermanent
impotent
kaleidoscopic
languid
languorous
lax
limber
limp
listless
loose
lustless
malleable
many-sided
marrowless
metamorphic
mobile
modifiable
movable
mutable
boneless
brittle
clammy
doughy
fibrous
gelatinous
glassy
gooey
grainy
jelly-like
leathery
pliable
puffy
pulpy
scaly
silky
slimy
spongy
stringy
sweaty
waxy
shrubbery