Synonyms|152Antonyms|5|Broader|1Narrower|0Related|55

13 entries under authenticate topic. ×

9
sign(noun, verb, law, support, take)
6
autograph(verb, law, support, take, agree)
6
subscribe(verb, law, agree, sign, confirm)
5
underwrite(verb, support, take, agree, sign)
2
cosign(verb, support, take, agree, sign)
2
notarize(verb, sign, underwrite, subscribe)
2
say amen to(verb, expression, idiom, sign, underwrite)
1
put John Hancock on(verb, expression, idiom, phrasal verb, support)
1
put signature on(verb, expression, idiom, sign, underwrite)
1
rubber-stamp(verb, support, take, agree, sign)
1
sign on dotted line(verb, expression, idiom, sign, underwrite)
1
superscribe(verb, sign, underwrite, subscribe)
0
sign off on(verb, expression, idiom, sign, underwrite)
For more, visit Undersign on Power Thesaurus
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APASmart Define. (2015). undersign thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/undersign/thesaurus/synonyms
ChicagoSmart Define. 2015. "undersign thesaurus" https://smartdefine.org/undersign/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, undersign thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/undersign/thesaurus/synonyms>.
MLASmart Define. "undersign thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/undersign/thesaurus/synonyms>