first-name basis

adjective

Definition of first-name basis

US

  1. People who are on a first-name basis know each other well and address each other by their first names. He was on a first-name basis with his boss. They know most of the officials on a first-name basis. —sometimes used figuratively She was on a first-name basis with adversity.

Word by Word Definitions

basisplay
  1. :  the bottom of something considered as its foundation

    :  the principal component of something

    :  something on which something else is established or based


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