推測の定義と意味 - メリアム・ウェブスター

SPECULATION Definition & Meaning - Merriam-Webster Est. 1828 Dictionary Definition Definition Synonyms Example Sentences Word History Phrases Containing Rhymes Entries Near Cite this Entry Citation Kids Definition Kids Legal Definition Legal More from M-W Show more Show more Citation Kids Legal More from M-W Save Word To save this word, you'll need to log in. Log In speculation noun spec·​u·​la·​tion ˌspe-kyə-ˈlā-shən Synonyms of speculation Take our 3 question quiz on speculation Simple Definition A Simple Definition is available from our Learner's Dictionary to help you understand the meaning faster. : an act or instance of speculating : such as a : assumption of unusual business risk in hopes of obtaining commensurate gain b : a transaction involving such speculation Take our 3 question quiz on speculation Synonyms of speculation Relevance gamble venture chance See All Synonyms & Antonyms in Thesaurus Examples of speculation in a Sentence He dismissed their theories as mere speculation . The book is just a lot of idle speculation about the future. Her speculations leave many questions unanswered. He lost everything in foolish land speculation . Recent Examples on the Web Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback . Also set to attend are Sombr, Tate McCrae, Tessa Thompson, Dwyane Wade and Gabrielle Union, while speculation continues around the stars in Beyoncé's orbit, including husband Jay-Z, sister Solange and mom Tina Knowles. — Anika Reed, USA Today , 5 May 2026 Internal disputes in the Moscow elite are often subject to heavy speculation but rarely exposed. — Nick Paton Walsh, CNN Money , 4 May 2026 After Baldoni and Lively did not pose together on the red carpet at the film’s premiere that August, both internet speculation and behind-the-scenes maneuvering picked up quickly. — Jon Blistein, Rolling Stone , 4 May 2026 The clips immediately went viral, sparking global speculation about what could have prompted such a violent altercation between the family members. — Alyssa Modos, PEOPLE , 4 May 2026 See All Example Sentences for speculation Word History First Known Use 14th century, in the meaning defined above Time Traveler The first known use of speculation was in the 14th century See more words from the same century Phrases Containing speculation anti - speculation Rhymes for speculation abdication aberration abjuration abnegation abrogation acceptation acclamation acclimation accusation activation actuation acylation See All Rhymes for speculation Browse Nearby Words speculate speculation speculatist See all Nearby Words Cite this Entry Style MLA Chicago APA Merriam-Webster “Speculation.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/speculation. Accessed 6 May. 2026. Copy Citation Kids Definition speculation noun spec·​u·​la·​tion ˌspek-yə-ˈlā-shən 1 : thoughts or guesses about something much speculation about who the new teacher would be 2 : the taking of a big risk in business in hopes of making a big profit Legal Definition speculation noun spec·​u·​la·​tion ˌspe-kyə-ˈlā-shən : an act or instance of speculating: as a : assumption of unusual business risk in hopes of obtaining commensurate gain b : a transaction involving such speculation More from Merriam-Webster on speculation Nglish: Translation of speculation for Spanish Speakers Britannica.com: Encyclopedia article about speculation Last Updated: 5 May 2026 - Updated example sentences Love words? Need even more definitions? Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Merriam-Webster unabridged More from Merriam-Webster Word of the Day flamboyant See Definitions and Examples » Get Word of the Day daily email! Popular in Grammar & Usage See More More Commonly Mispronounced Words Regarding the Incorrect Use of 'Decimate' 5 Verbal Slip Ups and Language Mistakes Is that lie 'bald-faced' or 'bold-faced'? The Difference Between 'i.e.' and 'e.g.' See More Popular in Wordplay See More The Longest Long Words List Where does 'curiosity killed the cat' come from? 9 Other Words for Beautiful Was 'nervous Nellie' a real person? 12 Lovely and Unusual Words for the Natural World See More Popular See More More Commonly Mispronounced Words The Longest Long Words List Where does 'curiosity killed the cat' come from? See More Games & Quizzes See All Quordle Can you solve 4 words at once? Play Blossom Pick the best words! Play The Missing Letter A daily crossword with a twist Play Name That Tree! A quiz that’s all bark, no bite. Take the quiz See All