na-adjective, noun which may take the genitive case particle 'no', noun
not urgent; nonessential
Describes something that does not require immediate attention or is not essential. Often used in official or business contexts, such as 不急の用事 (non-urgent business) or 不急の品 (nonessential goods). The 'nonessential industry' gloss is a specialized economic usage.
Please refrain from non-urgent outings.
この書類は不急なので、後で処理します。
This document is not urgent, so I'll handle it later.
nonessential and nonurgent; unnecessary
Compound of 不 (fu, 'not') and 急 (kyū, 'urgent'). The reading ふきゅう follows standard on'yomi.