Antonyms of adj summative

1 sense of summative

Sense 1
summational, summative -- (of or relating to a summation or produced by summation)

INDIRECT (VIA additive) -> subtractive -- (constituting or involving subtraction; "a subtractive correction")

Similarity of adj summative

1 sense of summative

Sense 1
summational, summative -- (of or relating to a summation or produced by summation)
       => additive (vs. subtractive) -- (characterized or produced by addition; "an additive process")