camouflaged
concealed
hidden
infrared
lightless
nonvisual
occult
out-of-sight
ultraviolet
undetectable
unseeyn
'qt
46
creeped-out
eyed
hundred-headed
hydra-headed
inside
many-tentacled
miasmatic
nonphysical
red-purple
red-tinged
reddish-white
sea-beast
therewithal
ungathered
unmeasurable
unprotesting
unremarked
unthought-of
white-red