non-recurring
adjective
(also nonrecurring) ukus FINANCE, ACCOUNTING, ECONOMICS
used to describe charges that do not happen regularly:
non-recurring charges/expenses/items Profit was $482 million after accounting for non-recurring charges of $305 million.
Officials discussed the issue of non-recurring imports, such as the 10 airplanes Malaysia Airlines took delivery on this year.
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one-off adjective