incidental condition; collateral condition; attached condition
A condition that accompanies a main agreement, contract, or statement; often used in legal, business, or formal contexts.
This contract has several incidental conditions attached.
He agreed, but as a collateral condition he demanded confidentiality.
条件 is a general term for 'condition' or 'term'. 付帯条件 specifically refers to a condition that is attached or incidental to a main agreement.
付帯 means 'incidental' or 'attached'. It is often used in compounds like 付帯条件 or 付帯業務 (incidental duties).
Compound of 付帯 (ふたい, 'incidental, attached') and 条件 (じょうけん, 'condition').