Valid Valid synonyms sound valid and sound legitimate valid and legitimate reasonable valid and reasonable true valid and true authentic valid and authentic logical valid and logical solid valid and solid credible valid and credible well-founded valid and well-founded lawful valid and lawful Full list of synonyms (1076) Valid antonyms invalid valid and invalid illegitimate valid and illegitimate false valid and false unsound valid and unsound wrong valid and wrong unreal valid and unreal fake valid and fake unfounded valid and unfounded groundless valid and groundless unreasonable valid and unreasonable Full list of antonyms (88) Share this picture Share this image Share this picture Share this image
