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off-base

American  
[awf-beys, of-] / ˈɔfˈbeɪs, ˈɒf- /

adjective

  1. located outside the perimeters of a military base.

    off-base housing for officers.
off base Idioms  

  1. Wrong, relying on a mistaken premise, as in His description of the accounting system was totally off base. This metaphoric term originated in baseball, where a runner who steps off a base can be put out. [c. 1940]

Etymology

Origin of off-base

First recorded in 1935–40

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.