Answer: phasein

AnswerCrossword Clue
PHASEIN

Actualize gradually

PHASEIN

Introduce by degrees

PHASEIN

Establish gradually

PHASEIN
Gradually introduce
PHASEIN
Introduce
PHASEINIntroduce at intervals.
PHASEINNot start all at once
PHASEINStart gradually, as a program
PHASEINAdd by degrees
PHASEINIntroduce gradually