assertor
Noun
Meaning
One who asserts or avers; one who maintains or vindicates a claim or a right; an affirmer, supporter, or vindicator; a defender; an asserter.
Source: Webster's dictionarySynonyms
defender
announcer
contender
protester
stater
maintainer
advancer
declarer
apologist
arguer
affirmer
avower
asserter
vindicator
postulator
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