Synonym: attitude, conception, explanation, hypothesis, idea, impression, inference, judgment, opinion, speculation, supposition, thought, view. Antonym: practice. Similar words: theoretical, more or less, theology, the other day, in the open, theological, story, history. Meaning: ['θɪːrɪ /'θɪərɪ] 
n. 1. a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena 2. a tentative theory about the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena 3. a belief that can guide behavior.
n. 1. a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena 2. a tentative theory about the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena 3. a belief that can guide behavior. 
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211. The theory does not seem easily applicable in this case.
212. He has a theory about why dogs walk round in circles before going to sleep.
213. The theory assumes the existence of a "meritocracy"?that there is equal opportunity for all.
214. Her notes give us just the bare skeleton of her theory.
215. It seems that the so-called new theory is likely to sink into oblivion.
216. They have learned the lessons of business management theory, and put them into action.
217. He is so obstinate that he still tries to defend his theory,(http://sentencedict.com/theory.html) although it has been proved wrong.
218. Einstein's theory links energy with mass and velocity of light.
219. The police have new evidence which lends weight to their theory.
220. The theory assumes that both labour and capital are mobile.
221. The theory has the face validity of being consistent with recent findings.
222. In theory, everyone will have to pay the new tax.
223. He was an unswerving empiri-cist with little time for theory.
224. There was a theory that he wanted to marry her.
225. Of course, the obverse of the theory may also be true.
226. There were some holes in that theory, some unanswered questions.
227. The findings of this research do not comport with accepted theory.
228. In theory, women can still have children at the age of 50.
229. The theory was then tested against the results of the study.
230. The euro has moved from the realms of theory into reality.
231. He has evolved a new theory after many years of research.
232. That is one reason why we have remained opposed to dogmatism toward the theory of Marxism.
233. In his latest book he writes that the theory has since been disproved.
More similar words: theoretical, more or less, theology, the other day, in the open, theological, story, history, factory, category, territory, inventory, in memory of, from memory, laboratory, regulatory, conciliatory.