back-of-the-envelope

Adjective

Meaning

back-of-the-envelope

(idiomatic) Approximate, rough, simplified, especially of a calculation, estimation or other reasoning.
Do some back-of-the-envelope calculations before all the facts come in.

Source: en.wiktionary.org

Close letter words and terms

back-number back-nurturing back-of-an-envelope back-of-the-fag-packet back-of-the-napkin back-overman