uncrystallized, uncertain, invisible, chronological, unstructured, monstrous, checked, unshapely, crisscross, checkered, even, unshaped, formed, checkerboard, anomalous, unmade, nebulous, chequered, nameless, distinct, indescribable, distorted, dappled, inexplicable, unaccountable, unformed, unfathomable, uncrystallised, indefinable, order, broken, candy-striped
deformed (part of speech: adjective)
chaotic (part of speech: adjective)
rambunctious, disorganized, cluttered, lawless, inexact, insane, inchoate, confused, disarrayed, tumultuous, inconsistent, obscure, embroiled, deformed, out of control, unruly, deranged, undisciplined, wild, loose, formless, lax, chaotic, tempestuous, disconnected, discomposed, disordered, perturbed, incoherent, blurry, indefinite, messy, muddled, jumbled, irregular, frantic, fuzzy, frenzied, amorphous, disorderly, anarchical, disheveled, indistinct, uneven, anarchistic, disintegrated
obscure (part of speech: adjective)
shapeless (part of speech: adjective)
ugly (part of speech: adjective)
ill-looking, unlovely, disfigured, plain, odious, unattractive, homely, displeasing, unappealing, abhorrent, ugly, repellent, repulsive, disagreeable, unsightly, unpleasant, unaesthetic, unpleasing, repugnant, hideous, grotesque, undesirable, inelegant
- Down came one wall, and then another, the roof fell in, and in one instant it was a heap of shapeless ruins. - "Paddy Finn", W. H. G. Kingston.
- What was that, looming towards her, shapeless and awful, across the bridge! - "A Pair of Clogs", Amy Walton.
- I could well believe it, for never had I seen so many graves with nothing more than a shapeless boulder at the head and foot to mark them. - "Nooks and Corners of the New England Coast", Samuel Adams Drake.