Meaning

noun a loud utterance; often in protest or opposition

verb utter in a loud voice; talk in a loud voice (usually denoting characteristic manner of speaking)

verb utter a sudden loud cry

originFrom Middle English shouten. Further origin uncertain. Possibly related to Middle English shooten (“to shoot (out)”) or from or akin to Old Norse skúta (“to chide, scold”), Old Norse skúti, skúta (“a taunt”). See also the second, rare sense of the verb scout (“to reject with contempt”).

Etymology from Wiktionary, CC BY-SA 3.0