Synonyms of 'shapeless'
She never wore anything but shapeless black dresses.
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Something that is amorphous has no clear shape or structure.
A dark, amorphous shadow filled the room.
Something that is formless does not have a clear or definite structure or shape.
Large formless images rushed across the screen.
Something that is irregular is not smooth or straight, or does not form a regular pattern.
He had bad teeth, irregular and discoloured.
Thesaurus for shapeless from the Collins English Thesaurus
Something that is shapeless does not have a distinct or attractive shape.