weightless having little or no weight or apparent gravitational pull
witless lacking sense or understanding or judgment
faithless having the character of a traitor; disloyal
at a loss below cost
weedless free from weeds
weightiness the property of being comparatively great in weight
flightless not able to fly
vitalise make more lively or vigorous
footless having no feet or analogous appendages
vitals a bodily organ that is essential for life
vitellus nutritive material of an ovum stored for the nutrition of an embryo (especially the yellow mass of a bird or reptile egg)
voteless deprived of the rights of citizenship especially the right to vote
fatless without fat or fat solids
sightless lacking sight
atlas a collection of maps in book form
edelweiss alpine perennial plant native to Europe having leaves covered with whitish down and small flower heads held in stars of glistening whitish bracts
lightless giving no light
footloose free to go or do as one pleases
utilize put into service
weightily as something very heavy