on the spur of moment (adverb) extemporaneously: without preparation
Sinonime: aimlessly, ambiguously, brokenly, chaotically, confusedly, disconnectedly, discontinuously, disjointedly, drunkenly,
frantically, frenziedly, illegibly, illogically, incomprehensibly, indistinctly, ineptly, randomly, sloppily, spasmodically, uncertainly, unclearly, unintelligibly, unrecognizably, unsystematically, wildly