every once in a while Antonyms

habitually time and again over and over again over and over again and again chronically a lot ceaselessly unceasingly yearly time and time again around the clock usually remorselessly in the main have it off at large per diem all the time nonstop round the clock throughout systematically generally frequently fortnightly everlastingly endlessly continuously continually constantly consistently incessantly interminably repeatedly regularly persistently perpetually permanently periodically perennially oftentimes often annually