Definition

Something that does not require any payment or expense.

Example

The service was costless, allowing everyone to participate without worrying about fees.

Conversation

Did you know there are some activities that are completely costless?

Really? Like what?

Well, things like hiking or visiting a public park are usually costless.

That sounds great! I love free activities, especially outdoors.

Synonyms & Antonyms

Root Explanation

Costless → It is formed from "cost" (from Old French *coste*, meaning expense or price) and "-less" (meaning without). The word "costless" means without cost or free of charge.

Memory Tip

Think of something that is 'without' ('-less') 'expense' ('cost') — that's why costless means free of charge.

Visually Confused Words