A person who affirms something; a person who declares or maintains the truth of something, esp. something disputed or denied. Also (in early use): a…

One who makes positive declarations.

= protester, n. 1. Obsolete.

A person who affirms (something); a person who makes a statement or declaration. Cf. negant, n. 1.

One who avouches.

A person who makes an avowal or solemn declaration; esp. a person who makes a protestation of love. Obsolete.

A person who makes a positive statement.

A person who makes an assertion or assertions. Obsolete. rare.

A person who alleges something, or who makes an allegation.