The world's leading online dictionary: English definitions, synonyms, word origins, example sentences, word games, and more. A trusted authority for 25+ years!

Find definitions for over 300,000 words from the most authoritative English dictionary. Continuously updated with new words and meanings.

12th century, in the meaning defined at sense 1a. What about 'whataboutism'? If everyone is guilty of something, is no one guilty of anything? “What.” Merriam-Webster.com Dictionary, …

(used interrogatively as a request for specific information). What is the matter? (used interrogatively to inquire about the character, occupation, etc., of a person). What does he do? …

DEFINITION definition: the act of defining, or of making something definite, distinct, or clear. See examples of definition used in a sentence.

1 day ago · President Trump proclaimed Dec. 26 a federal holiday in 2025, but some countries already recognize the date as its own holiday.

pronunciation note: Usually pronounced (hwɒt ) for meanings [sense 2], [sense 4], [sense 5] and [sense 18]. You use what in questions when you ask for specific information about something …

3 days ago · Clear and simple definitions in American English from Britannica's language experts. More usage examples than any other dictionary.

Used to express surprise, incredulity, or other strong and sudden excitement. 2. Chiefly British Used as a tag question, often to solicit agreement. Informal Used as an intensive at the end of …

We use what to ask questions and as a pronoun and determiner. … We can use what to ask for information about things and actions: … We can use what in informal situations to ask …