Bona fide, able to hold water, authentic, and binding are all synonyms for valid. Invalid, illegal, and void are these antonyms of valid. And here are another 51 synonyms for valid.
Valid Synonyms
1. rational
- Able to hold water
- Arguable
- Authoritative
- Believable
- Bona fide
- Cogent
- Convincing
- Credible
- Defendable
- Defensible
- Effective
- Forceful
- Justifiable
- Logical
- Maintainable
- Plausible
- Powerful
- Rational
- Reasonable
- Reliable
- Sound
- Strong
- Substantial
- Supportable
- Sustainable
- Telling
- Viable
- Weighty
- Well founded
- Well grounded
- Workable
- Vindicable
2. proper
- Authentic
- Binding
- Bona fide
- Contractual
- Correct
- Genuine
- In effect
- In force
- Lawful
- Legal
- Legally acceptable
- Legally binding
- Legitimate
- Licit
- Official
- Proper
- Signed and sealed
- Effective