最終更新日：2024/08/05

(idiomatic) Having enough familiarity with another person to call them by their first name, as opposed to their surname.

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on a first-name basis

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元となった辞書の項目

on a first-name basis

adv

(idiomatic) Having enough familiarity with another person to call them by their first name, as opposed to their surname.

They address each other on a first-name basis.

意味（1）

(idiomatic) Having enough familiarity with another person to call them by their first name, as opposed to their surname.

We are not yet on a first-name basis.