shapeless

adjectives

having no definite form or distinct shape

"amorphous clouds of insects"; "an aggregate of formless particles"; "a shapeless mass of protoplasm"

amorphous, formless, shapeless

is derived from

lacking symmetry or attractive form

"a shapeless hat on his head"

shapeless

is derived from

is similar to

not well-proportioned and pleasing in shape

"a stout unshapely woman"