retardative

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective retardative is

that retards.

As adjectives the difference between retardative and retardive

is that retardative is that retards while retardive is that retards; retardative.

As a noun retard

is retardation; delay.

As a verb retard

is to keep delaying; to continue to hinder; to prevent from progress; to render more slow in progress; to impede; to hinder.

As an adjective retardative is

that retards.