qual·i·ta·tive / ˈkwäləˌtātiv/ • adj. relating to, measuring, or measured by the quality of something rather than its quantity: a qualitative change in the undergraduate curriculum.Often contrasted with quantitative. ∎ Gram. (of an adjective) describing the quality of something in size, appearance, value, etc. Such adjectives can be submodified by words such as very and have comparative and superlative forms. Contrasted with classifying.DERIVATIVES: qual·i·ta·tive·ly adv.