aloud: [14] Aloud was formed in Middle English from the adjective loud and the prefix a-, as in abroad; it does not appear to have had a direct Old English antecedent *on loud. Its opposite, alow ‘quietly’, did not survive the 15th century. => loud
aloud (adv.)
late 14c., from a- (1) + loud.
权威例句
1. Prue entered the passage in her notebook, then read it aloud again.