unsystematic illogical irrational messy unmethodical unscientific confused cursory haphazard invalid nonrational nonsensical specious erroneous implausible inane senseless slapdash unplanned unreasoning unsystematized chaotic contradictory disorganised disorganized fallacious groundless inconsistent incorrect jumbled muddled preposterous unorganised unorganized unreasoned untenable cluttered disorderly faulty flawed indiscriminate scattered scrambled undisciplined unfounded unjustifiable unjustified unproved unsound fatuous heterogeneous absurd uncoordinated random immethodical unpremeditated arbitrary nonsystematic patternless irregular planless unbusinesslike artistic disordered anarchic disjointed sloppy erratic shambolic unstructured orderless incompetent untidy incoherent slovenly incurious disinterested uninquisitive unconcerned uninterested indifferent uninquiring uncurious unresponsive nonchalant uninvolved apathetic unobtrusive unquestioning unreliable undependable uninformed untrustworthy disreputable dishonest unproven flighty inadequate unrespected capricious