"shapeless, having no determined form," 1731, from Modern Latin amorphus, from Greek amorphos "without form, shapeless, deformed," from a- "without" (see a- (3)) + morphē "form," a word of uncertain etymology. Related: Amorphously; amorphousness.
amorphous clouds of insects
A mob is an amorphous crowd of people without ideals, a sum of individuals in which each lives for himself
Her vague, amorphous statement of her predicament was part of what made it so hard for her to solve it
an amorphous mineral