American English

Definition of basis noun from the Oxford Advanced American Dictionary



    (pl. bases
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  1. 1[singular] the reason why people make a particular choice She was chosen for the job on the basis of her qualifications. Some movies have been banned on the basis that they are too violent. Thesaurusreasonexplanation grounds basis excuse motive justification pretextThese are all words for a cause or an explanation for something that has happened or that someone has done.reason a cause or an explanation for something that has happened or that someone has done; a fact that makes it right or fair to do something:She refused our request, but she didn't give a reason.explanation a statement, fact, or situation that tells you why something has happened; a reason given for something:The most likely explanation is that his plane was delayed. She left the room abruptly without explanation.grounds (somewhat formal) a good or true reason for saying, doing, or believing something:You have no grounds for your accusation.basis (somewhat formal) the reason why people make a particular choice:On what basis will this decision be made?excuse a reason, either true or invented, that you give to explain or defend your behavior; a good reason that you give for doing something that you want to do for other reasons:Late again! What's your excuse this time? It gave me an excuse to drive instead of walking.motive a reason that explains someone's behavior:There seemed to be no motive for the murder.justification (somewhat formal) a good reason why something exists or is done:I can see no possible justification for any further tax increases.grounds or justification?Justification is used to talk about finding or understanding reasons for actions, or trying to explain why it is a good idea to do something. It is often used with words like little, no, some, every, without, and not any. Grounds is used more for talking about reasons that already exist, or that have already been decided, for example by law:moral/economic grounds.pretext (somewhat formal) a false reason that you give for doing something, usually something bad, in order to hide the real reason:He left the party early on the pretext of having to work.Patterns (a/an) reason/explanation/grounds/basis/excuse/motive/justification/pretext for something the reason/motive behind something on the grounds/basis/pretext >of/that…> (a) valid reason/explanation/grounds/excuse/motive/justification a good reason/explanation/basis/excuse/motive
  2. 2[singular] the way things are organized or arranged on a regular/permanent/part-time/temporary basis on a daily/day-to-day/weekly basis
  3. 3[countable, usually singular, uncountable] the important facts, ideas, or events that support something and that it can develop from The basis of a good marriage is trust. This article will form the basis for our discussion. The theory seems to have no basis in fact. Thesaurusbasisfoundation groundwork baseThese are all words for the ideas, facts, or work that something is based on.basis [usually sing.] a principle, an idea, or a fact that supports something and that it can develop from:This article will form the basis for our [C, U] a principle, an idea, or a fact that supports something and that it develops from:Respect and friendship provide a solid foundation for marriage. The rumor is totally without foundation (= is not based on any facts).basis or foundation?Foundation is often used to talk about larger or more important things than basis:He laid the foundations of Japan's modern economy. These figures formed the basis of their claim for compensation.groundwork [U] work that is done as preparation for other work that will be done later:Her study laid the groundwork for my research.base [usually sing.] an idea, a fact, or a situation from which something is developed:This work provided us with a strong base upon which to build the company.Patterns a/the basis/foundation/groundwork/base for something a secure/solid/sound/strong/weak basis/foundation/base to form the basis/foundation/base of something to lay the foundation/groundwork for something to be without basis/foundation
See the Oxford Advanced Learner's Dictionary entry: basis

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