Exclamation/ˌekskləˈmeɪʃn/ Definition 1 of 2Pro Tip 1/3Emotional Intensity Exclamations often convey strong emotions or reactions, making a statement more vibrant. What a fantastic performance! Pro Tip 2/3Use with Caution In formal writing, limit the use of exclamations to avoid unprofessional tone. In an official letter, avoid writing 'This is unbelievable!' Pro Tip 3/3Common in Dialogue Use exclamations to reflect the way people speak in stories and direct quotes. He yelled, 'I won the lottery!'