one-off
one-off — noun
1. an item or event that is done, made, or takes place on a single occasion and is
an item or event that is done, made, or takes place on a single occasion and is not intended to be repeated or to form part of a regular series.
The outdoor concert was a one-off, never to be repeated in the park.
"a one-off" as a noun phrase describing a unique, non-repeating event
Mizuki's hand-painted vase is a one-off, which makes it especially valuable to collectors.
The city council approved a one-off grant to repair the damaged town hall roof.
Sahil's award-winning short film was a one-off, since he usually focuses on documentaries.
The museum curator described the ancient brooch as a one-off, noting the unusual gold inlay.
- regular occurrence
an event that happens routinely
- repeat
something that happens again
用法筆記
This noun is nearly always used in the singular. It often follows the verb "be" (e.g., "it's a one-off", "was a one-off").
常見錯誤
one-off — adjective
1. done, made, or happening only once, with no plan or expectation of repetition; d
done, made, or happening only once, with no plan or expectation of repetition; describing a single instance rather than part of a series.
The company gave all employees a one-off bonus after a very profitable year.
"one-off bonus" — a single additional payment, not a regular raise
Owen received a one-off payment from the insurance company for the damage to his car.
The museum hosted a one-off exhibition of paintings from the Ming dynasty.
Hoa's one-off performance at the music festival earned her a standing ovation from the crowd.
- one-time
neutral and widely used; also carries the meaning 'former' (e.g., one-time teacher) that one-off does not
- single
simply means one, without the nuance of uniqueness or non-repetition; much broader
- unique
stresses being the only one of its kind, not just non-repetition; has a more positive connotation
用法筆記
This adjective can only go before the noun it describes (attributive position). You cannot say "this bonus is one-off" — instead use the noun form: "this bonus is a one-off".