1) Ended gradually with out 2) Introduced by stages 3) Introduced gradually 4) Introduced in stages 5) Synchronized 1) In sync 
phase, phasing, phased 1. Each of the successive aspects or stages in any course of change or development. 2. The view that anything presents to the eye, or any one of varying distinctive manifestations of an object. 3. An aspect in the cycle of changing form or quantity of illumination of the moon or of a planet. 4. A uniform bounded portion of...