Synonyms of insanely

2 Syllables

amuck, madly, weirdly, wildly

3 Syllables

laughably, stormily, hurriedly, stupidly, crazily, rabidly, frenziedly, absurdly, ravingly, fiercely, furiously, witlessly, morbidly, violently

4 Syllables

devotedly, comically, inanely, turbulently, dementedly, ferociously, deliriously, maniacally, senselessly, distractedly, ludicrously, gruesomely

5 Syllables

preposterously, idiotically, destructively, irrationally, nonsensically, psychotically, ridiculously, hysterically