Simple Definition of one-off

from our Learner's Dictionary

one-off

adjective

ˌwʌnˈɑːf

always used before a noun

chiefly British : done or happening only once

one-off gigs/events

a one-off cost/payment

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“One-off.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/one-off. Accessed 21 Jun. 2026.

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