Synonyms|673Antonyms|118|Broader|13Narrower|17Related|401

67 entries under idiom topic. ×

1
swear up and down(verb, expression, support, maintain)
1
take the part of(verb, expression, hold, help)
1
throw in with(verb, expression, hold, help)
1
try it on
1
try on for size(expression, check, examine, try)
0
be evidence of(expression, demonstration)
0
bring to book(expression, evidence)
0
establish as valid
0
free from blame(expression, maintain, defend, uphold)
0
furnish proof
0
have a case(expression, evidence)
0
have a lock on(verb, expression, verify, ensure)
0
keep going
0
know for certain(verb, expression, verify, ensure)
0
let it all hang out(expression, reveal, prove, exhibit)
0
prove true(expression, truth)
0
put on ice(verb, expression, verify, ensure)
0
put something through its paces(verb, expression, check, examine)
0
reduce to demonstration(expression, demonstration)
0
render true(expression, truth)
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APASmart Define. (2015). substantiate thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/substantiate/thesaurus/synonyms
ChicagoSmart Define. 2015. "substantiate thesaurus" https://smartdefine.org/substantiate/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, substantiate thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/substantiate/thesaurus/synonyms>.
MLASmart Define. "substantiate thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/substantiate/thesaurus/synonyms>