Free; without charge (8)

I believe the answer is:

costless

This clue is a double definition.

'free' is the first definition.
(synonyms)

'without charge' is the second definition.
('charge' can be 'cost' (I've seen this in other clues) so maybe 'without charge' can be ''costless')

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.