What does "costless" mean?

Having no cost, or at least no cost paid for at the point of sale.

What is a synonym for "costless"?

Common synonyms include: free, gratis, absence of extra costs, buckshee, charitable, complimentary.

adj

adj ·Rare ·Advanced level

Adjective

1
Having no cost, or at least no cost paid for at the point of sale. not-comparable

Adjective

From cost + -less. Compare Dutch kosteloos (“costless, free”).