formless
adjective
[ ˈfɔːmləs ]
• without a clear or definite shape or structure.
• "a dark and formless idea"
Similar:
shapeless,
amorphous,
unformed,
unshaped,
nebulous,
vague,
hazy,
misty,
shadowy,
ill-defined,
indistinct,
obscure,
blurred,
blurry,
indefinite,
indeterminate,
structureless,
unstructured,
ill-organized,