Definition

Describing something that does not combine or add up in a straightforward way, especially in terms of numerical values or effects.

Example

The nonadditive effects of the chemicals made it difficult to predict their overall impact.

Conversation

Have you heard about the nonadditive effects in genetics?

Yeah, I read something about it recently — it's pretty interesting!

Right? It means that some traits don't just add up like you'd expect.

Exactly! It's fascinating how complex genetics can be.

Synonyms & Antonyms

Root Explanation

Nonadditive → It is formed from "non-" (meaning not) and "additive" (from Latin "addere", meaning to add). The word "nonadditive" describes something that does not contribute additional value or effect when combined with others.

Memory Tip

Think of 'not' ('non-') adding anything extra ('additive') — that's why nonadditive means it doesn't add value.

Visually Confused Words