Definition of “one-way” - English Dictionary

“one-way” in British English

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one-wayadjective

uk /ˌwʌnˈweɪ/ us /ˌwʌnˈweɪ/

[ before noun ] travelling or allowing travel in only one direction:

I drove the wrong way down a one-way street.
How much is a one-way ticket to New York?
a one-way ticket to sth

If something is a one-way ticket to an unpleasant situation, it will cause that situation to happen:

A rejection of the peace deal would be a one-way ticket to disaster for the country.

A one-way relationship is not fair because only one person or group of the two makes any effort.

(Definition of “one-way” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“one-way” in American English

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one-wayadjective, adverb [ not gradable ]

/wʌnˈʌp·mənˌʃɪp/

traveling or allowing travel in only a single direction:

a one-way street
He bought a one-way ticket to Miami.

(Definition of “one-way” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“one-way” in Business English

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one-wayadjective [ before noun ]

uk /ˌwʌnˈweɪ/ us

TRANSPORT travelling or allowing travel in only one direction:

a one-way fare
a one-way ticket

COMMUNICATIONS only allowing communication in one direction:

Line management should not be a one-way process.

(Definition of “one-way” from the Cambridge Business English Dictionary © Cambridge University Press)