Back-of-an-envelope

adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Alternative form of back-of-the-envelope. alt-of, alternative, not-comparable

    "On one defense item, somebody kept referring to it as a back-of-an-envelope cost estimate. Do you have a back-on-an-envelope cost estimate?"

Synonyms

All synonyms
back-of-the-fag-packetback-of-the-napkin

Example

More examples

"On one defense item, somebody kept referring to it as a back-of-an-envelope cost estimate. Do you have a back-on-an-envelope cost estimate?"

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.