adv not often = rarely ≠ frequently Jeremy does play cricket, but very infrequently. not infrequently formal fairly often The censors changed some names and dialogue and, not infrequently, banned controversial films completely.
1. Not infrequently he had to be called again and again before he came down to the dining-room. 他总是要别人一遍又一遍地叫才会到楼下的餐厅吃饭。