valid

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

1. well grounded in logic or truth or having legal force (Freq. 5)
- a valid inference
- a valid argument
- a valid contract
• Ant:
invalid
• Similar to:
binding, legal, sound, effectual, legitimate,
logical, reasoned, well-grounded, validated
• See Also:
legitimate, reasonable, sensible
• Derivationally related forms:
validness, validity
2. still legally acceptable
- the license is still valid
• Similar to:
unexpired
• Derivationally related forms:
validness, validity