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on a first-name basis

Idioms  
  1. Quite familiar and friendly, as in Practically all the guests were on a first-name basis. This idiom alludes to the fact that using a person's given name betokens familiarity. [Second half of 1900s]


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He was quickly on a first-name basis with Paul Rudolph, the intimidating head of the school, and the influential art historian Vincent Scully.

From The Wall Street Journal • Nov. 28, 2025

He was soon on a first-name basis with then-Galaxy coach Sigi Schmid.

From Los Angeles Times • Jul. 14, 2024

Murray hated flying and he hated New York, yet every big-name mixologist in the East Village seemed to know him on a first-name basis.

From Seattle Times • Nov. 9, 2023

Locals are on a first-name basis with significant nearby fires, and they become familiar conversational touchstones.

From Slate • Sep. 18, 2023

She’s also on a first-name basis with a local plumber, who’s learning to deal with my pushy roots.

From "Wishtree" by Katherine Applegate

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