Tra từ basis - Từ điển Oxford Advanced Learner 8th

basis [basis bases] BrE [ˈbeɪsɪs] NAmE [ˈbeɪsɪs] noun (pl. basesBrE [ˈbeɪsiːz] ; NAmE [ˈbeɪsiːz] )
1. singular the reason why people take a particular action
• 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.
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. countable, usually singular, uncountable the important facts, ideas or events that support sth 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.

Word Origin:
late 16th cent. (denoting a base or pedestal): via Latin from Greek, stepping. Compare with the noun ↑base.

Thesaurus:
basis noun
1. sing.
•She was chosen on the basis of her qualifications.
reason • • grounds • • justification • • cause • • argument • • case •
(a/an) basis/reason/grounds/justification/cause/argument/case for sth
on the basis/grounds of/that…
the basis/reason/grounds/justification/argument/case that…
2. C, usually sing.
•The basis for a good marriage is trust.
foundation • • base •
a/the basis/foundation/base of/for sth
have sth as/establish/use sth as/form a/the basis/foundation/base of sth
have no basis/foundation in fact
Basis or foundation? Foundation is often used to talk about larger and more important things than basis
•He laid the foundation of Japan's modern economy.
• These figures formed the basis of their pay claim.

Synonyms:
basis
foundation • base
These are all words for the ideas or facts that sth is based on.
basis • [usually sing.] a principle, an idea or a fact that supports sth and that it can develop from: ▪ This article will form the basis for our discussion.
foundation • [C, U] a principle, an idea or a fact that supports sth and that it develops from: ▪ Respect and friendship provide a solid foundation for marriage. ◇ ▪ The rumour 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 pay claim.
base • [usually sing.] an idea, a fact or a situation from which sth is developed: ▪ His arguments have a sound economic base.
a/the basis/foundation/base for/of sth
a secure/solid/sound/strong/weak basis/foundation/base
to form the basis/foundation/base of sth
to be without basis/foundation

Synonyms:
reason
explanation • grounds • basis • excuse • motive • justification • pretext
These are all words for a cause or an explanation for sth that has happened or that sb has done.
reason • a cause or an explanation for sth that has happened or that sb has done; a fact that makes it right or fair to do sth: ▪ He said no but he didn't give a reason.
explanation • a statement, fact or situation that tells you why sth has happened; a reason given for sth: ▪ The most likely explanation is that his plane was delayed. ◇ ▪ She left the room abruptly without explanation.
grounds • (rather formal) a good or true reason for saying, doing or believing sth: ▪ You have no grounds for complaint.
basis • (rather formal) the reason why people take a particular action: ▪ On what basis will this decision be made?
excuse • a reason, either true or invented, that you give to explain or defend your behaviour; a good reason that you give for doing sth that you want to do for other reasons: ▪ Late again! What's your excuse this time? ◇ ▪ It gave me an excuse to take the car.
motive • a reason that explains sb's behaviour: ▪ There seemed to be no motive for the murder.
justification • (rather formal) a good reason why sth 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 sth. 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 • (rather formal) a false reason that you give for doing sth, usually sth bad, in order to hide the real reason: ▪ He left the party early on the pretext of having to work.
(a/an) reason/explanation/grounds/basis/excuse/motive/justification/pretext for sth
the reason/motive behind sth
on the grounds/basis/pretext of/that…
(a) good/valid reason/explanation/grounds/excuse/motive/justification

Example Bank:
•Staff are employed on a monthly basis.
•The proposal provides a sound basis for a book.
•The whole basis for your argument is false.
•These allegations have no basis in fact.
•We made our decision on the basis of the information we had.
•On what basis will this decision be made?
•She was chosen for the job on the basis of her qualifications and ideas.
•Some videos have been banned on the basis that they are too violent.
•This theory seems to have no basis in fact.