People who make strong claims or declarations about something, especially in a confident or forceful way.
Plural of assertor, from Latin assertor (one who claims, maintains, or defends), derived from asserere (to claim, maintain, assert). The Latin root combined as- (to) with serere (to join or connect), originally meaning to join oneself to a claim.
In Roman law, an assertor was specifically someone who claimed ownership of property and defended that claim in court—so assertors were literally defending their assertions! The word still carries that combative, defensive energy.
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