Synonyms and related words :
ad-lib, aimless, amorphic, amorphous, anarchic, baggy, blobby, blurred, blurry, capricious, casual, caught napping, caught off balance, caught short, chaotic, characterless, confused, desultory, disarticulated, disconnected, discontinuous, disjointed, disjunct, disordered, disorderly, dispersed, disproportionate, erratic, extemporaneous, extemporized, featureless, fitful, formless, frivolous, fuzzy, gratuitous, haphazard, hasty, hazy, hit-or-miss, immethodical, impromptu, improvised, inchoate, incoherent, indecisive, indefinite, indeterminate, indiscriminate, inform, inorganic, irregular, kaleidoscopic, lumpen, makeshift, meaningless, mineral, misshapen, misty, muddled, nonbiological, nondescript, nonorganic, nonsymmetrical, nonsystematic, nonuniform, obscure, orderless, planless, precipitate, promiscuous, random, rough-and-ready, senseless, shapeless, snap, spasmodic, sporadic, straggling, straggly, surprised, systemless, taken aback, taken by surprise, taken unawares, tripped up, unarranged, unbegun, unclassified, unclear, unconcocted, unconnected, uncontrived, undefined, undeliberated, undevised, undirected, ungraded, unhatched, unjoined, unmade, unmanufactured, unmethodical, unordered, unorganic, unplanned, unpremeditated, unprepared, unprimed, unready, unsorted, unstudied, unsymmetrical, unsystematic, ununiform, vague, wandering