Definition

A person or thing that increases or improves something, such as a shot that enhances immunity or a device that amplifies power.

Example

The school organized a fundraiser to hire a booster for the sports team.

Conversation

Have you heard about the new booster shot for the vaccine?

Yeah, I read it can really help increase immunity.

I think it's important to get that booster if you can.

Absolutely, staying safe is the top priority.

Synonyms & Antonyms

Root Explanation

Booster → It is formed from "boost" (originating from the 19th-century slang meaning to lift or raise) and the suffix "-er" (meaning a person or thing that performs an action). The word "booster" refers to a person or thing that boosts or raises something.

Memory Tip

Think of someone or something that 'lifts' or 'raises' — that's what a booster does.

Visually Confused Words