(a.) Having no plan.

aimless amorphous capricious casual desultory disarticulated discontinuous disjunct disordered dispersed disproportionate erratic fitful formless frivolous gratuitous haphazard hit-or-miss immethodical inchoate incoherent indiscriminate irregular meaningless misshapen nonsymmetrical nonsystematic nonuniform orderless promiscuous random senseless shapeless spasmodic sporadic straggling straggly systemless unarranged unclassified undirected ungraded unjoined unmethodical unordered unorganized unsorted unsymmetrical unsystematic ununiform vague wandering