amorphous
adjective
[ əˈmɔːfəs ]
• without a clearly defined shape or form.
• "an amorphous, characterless conurbation"
Similar:
shapeless,
formless,
unformed,
unshaped,
structureless,
unstructured,
indeterminate,
indefinite,
vague,
nebulous,
Origin:
mid 18th century: from modern Latin amorphus, from Greek amorphos ‘shapeless’ (from a- ‘without’ + morphē ‘form’) + -ous.