late Middle English: from Latin exclamatio(n-), from exclamare 'shout out' (see exclaim)
A remark expressing surprise, delight, pain, anger, or other strong emotion, often spoken with extra force or emphasis:How wonderful! In writing, exclamations are often shown by the use of an exclamation mark. Exclamation sentences can have a special grammatical construction, which involves changing the normal sentence order and starting the sentence in one of two ways: The sentence begins with how + adjective:How strange it looked from below! (instead of It looked strange from below.) The sentence begins with what + noun phrase:What an incredible confidence trick the election polls have turned out to be. (instead of The election polls have turned out to be an incredible confidence trick.)In speech particularly, exclamations frequently contain no verb:How stupid of me!