round the clock Antonyms

not every time changing all the time hardly ever always changing every now and then every so often every once in a while ever and anon episodically at intervals noncontinuous constantly changing continuously changing from case to case inhabitually not regularly not always every now and again ever so often at one time or another in a few cases in some cases permanently changing now and then now and again isolated irregularly irregular intermittent infrequent inconstant fitful erratic episodical episodic occasional odd from time to time at times at random unusual temporary sporadic spasmodic scattered scarce rare discontinuous