additive

nouns

something added to enhance food or gasoline or paint or medicine

additive

is a type of (narrower)

a component that is added to something to improve it

"the addition of a bathroom was a major improvement"; "the addition of cinnamon improved the flavor"

add-on, addition, improver

adjectives

designating or involving an equation whose terms are of the first degree

additive, linear

is derived from

add

is derived from

add

characterized or produced by addition

"an additive process"

additive

is derived from

is derived from

is derived from

antonym

is similar to

increasing by successive addition

"the benefits are cumulative"; "the eventual accumulative effect of these substances"

accumulative, cumulative

is similar to

capable of being added or added to

addable, addible

is similar to

further or added

"called for additional troops"; "need extra help"; "an extra pair of shoes"

additional, extra

is similar to

acting as or providing a complement (something that completes the whole)

complemental, complementary, completing

is similar to

increasing gradually by regular degrees or additions

"lecturers enjoy...steady incremental growth in salary"

incremental

is similar to

having a day or month inserted to make the calendar year correspond to the solar year: "Feb. 29 is an intercalary day"

"a leap year is an intercalary year"

intercalary

is similar to

of or relating to a summation or produced by summation

summational, summative

is similar to

added to complete or make up a deficiency

"produced supplementary volumes"

supplemental, supplementary