Answer: gradual

AnswerCrossword Clue
GRADUAL

Book of religious chants

GRADUAL

Done bit by bit

GRADUAL

Like evolution

GRADUAL
Slow-paced
GRADUAL
Occurring in small stages
GRADUALNot revolutionary
GRADUALLittle-by-little
GRADUALNot so fast
GRADUALStep-by-step
GRADUALResponsory song after the Epistle
GRADUALProceeding by degrees
GRADUALOpposite of precipitous
GRADUALDeveloping little by little
GRADUALModerate
GRADUALInchmeal
GRADUALOccurring little by little.
GRADUALSlow but steady.
GRADUALSlow.
GRADUALGentle.
GRADUALDone by degrees
GRADUALNot all at once
GRADUALChanging slowly
GRADUALSlow
GRADUALSlow and steady
GRADUALGentle
GRADUALBit-by-bit