③
乐于提供信息的;现成的(随问随答的)
相关 形容词理据由「随之而来」喻「随问而答」——信息随要求即至,遂为爽快应答(1835;He was not forthcoming about his plans「他对计划避而不谈」)。
例句
She was very forthcoming with the details.她很爽快地提供了细节;由随之而来喻随问即答(相关·比喻)——乐于提供信息。The witness was not forthcoming in court.证人在法庭上避而不答;同此——不愿提供信息(否定用法)。
溯源路径本义 → 义项3