'yeller' originates from English, specifically the word 'yell' with the agentive suffix '-er'; 'yell' ultimately comes from Old English 'gellan' meaning 'to shout'.

'yeller' changed from Middle English verb forms such as 'yellen' (from Old English 'gellan') and eventually became the modern English noun 'yeller' through the addition of the agentive suffix '-er'.

Initially, the root meant 'to make a loud sound' (to shout), and over time the derived form 'yeller' came to mean 'a person who shouts', a meaning that has remained consistent in modern usage.