Where does “mutual assured destruction” come from?

mutual assured destruction (English) comes from English mutual, from Middle French mutuel, from Latin mūtuus, from Latin muto, from Latin -ium, from Latin -ius, from Proto-Italic -jōs, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

mutual assured destruction (English): The threat of massive retaliation using nuclear...

Definitions

  1. The threat of massive retaliation using nuclear...

Ancestry of “mutual assured destruction”, step by step

mutual assured destruction traces back through two separate lines of ancestry.

via English mutual

StepLanguageWordMeaning
1EnglishmutualHaving the same relationship, each to each other;...
2Middle Frenchmutuelmutual
3Latinmūtuusborrowed, lent
4LatinmutoI move, remove; I alter, change, modify,...
5Latin-iumSuffix used to form abstract nouns, sometimes...
6Latin-iusforming adjectives from nouns; nominative neuter...
7Proto-Italic-jōsForms comparative adjectives
8Proto-Indo-European-yósCreates adjectives from noun or verb stems

via English assured

StepLanguageWordMeaning
1Englishassuredsimple past tense and past participle of assure;...
Every word from Proto-Indo-European -yósEvery word from Latin -iumEvery word from Latin -ius