Definition

To make something less effective or to spoil its quality.

Example

The new regulations may vitiate the effectiveness of the program.

Tense Forms

Conversation

I read that certain chemicals can vitiate the quality of our food.

That's a bit concerning, isn't it?

Yeah, it really makes you think about what we eat.

For sure! We should try to choose organic whenever possible.

Synonyms & Antonyms

Root Explanation

Vitiate → It is formed from "vitium" (meaning fault or defect) and the suffix "-ate" (indicating to make or cause). The word "vitiate" means to make something faulty or to impair its quality.

Memory Tip

Think of a 'fault' ('vitium') that makes something 'defective' or 'imperfect' — that's why vitiate means to spoil or impair.

Visually Confused Words