Synonyms and Antonyms for authentication

Synonyms:

• hallmark
• assay-mark
• marking
• mark
• marker

Antonyms:

• demonetization
• weaken
• pervious
• disenfranchisement

Synonyms:

• validation
• substantiation
• proof
• certification

Antonyms:

• detach
• add
• ignore
• take away
• natural object