The word "flamer" is slang for someone who is purposely and aggressively inflammatory in their language and behavior online, often targeting specific individuals or groups. Synonyms for this term include "troll," "bully," "hater," "instigator," "agitator," "provocateur," "offensive," "abusive," "combative," and "confrontational." Each of these synonyms denotes a similar behavior where the person seeks to cause conflict and drama, generally with little concern for the harm they may cause. It is important to recognize and respond to such behavior in a constructive and positive way, rather than engaging in similar language or behavior.