constantly Antonyms

swiftly at random indiscriminately at times from time to time now and again now and then on occasion once in a while antagonistically anymore illogically in the meantime asymmetrically of a sudden all of a sudden temporarily transitorily unequally unoften variably variously while instantaneously suddenly by chance unexpectedly against the clock never again no longer unusually traitorously treacherously unevenly unpatriotically unpredictably unsystematically every now and then hardly ever in some cases on the odd occasion on occasions not always pro tempore pro tem patchily unsteadily unstably adjustably at intervals