Antonyms of adj uncollectible

1 sense of uncollectible

Sense 1
bad, uncollectible -- (not capable of being collected; "a bad (or uncollectible) debt")

INDIRECT (VIA invalid) -> valid -- (well grounded in logic or truth or having legal force; "a valid inference"; "a valid argument"; "a valid contract")

Similarity of adj uncollectible

1 sense of uncollectible

Sense 1
bad, uncollectible -- (not capable of being collected; "a bad (or uncollectible) debt")
       => invalid (vs. valid) -- (having no cogency or legal force; "invalid reasoning"; "an invalid driver's license")