Where does “seat-of-the-pants” come from?

seat-of-the-pants (English) comes from English pants, from English pantaloons, from English pantaloon, from French pantalon, from Italian Pantalone, from Ancient Greek Παντελεήμων, from Ancient Greek ἐλεήμων, from Ancient Greek ἐλεέω — Creates transitive imperfective verbs from roots.

seat-of-the-pants (English): Done by feel, guess, or trial and error rather than by careful planning, thought or technique

Definitions

  1. Done by feel, guess, or trial and error rather than by careful planning, thought or technique

Ancestry of “seat-of-the-pants”, step by step

seat-of-the-pants traces back through 3 separate lines of ancestry.

via English pants

StepLanguageWordMeaning
1EnglishpantsAn outer garment that covers the body from the...
2EnglishpantaloonsAn article of clothing covering each leg...
3EnglishpantaloonAn aging buffoon; Trousers reminiscent of the...
4Frenchpantalontrousers UK, pants US
5ItalianPantalonePantaloon (Venetian theatrical character)
6Ancient GreekΠαντελεήμων
7Ancient Greekἐλεήμωνpitiful, merciful
8Ancient GreekἐλεέωI have pity on, take pity on, show mercy to
9Ancient Greek-έωUsed to form verbs from nouns, adjectives and...
10Proto-Indo-European-éyetiForms causative imperfective verbs from roots;...
11Proto-Indo-European-yetiCreates transitive imperfective verbs from roots

via English The

StepLanguageWordMeaning
1EnglishTheUsed before a noun phrase, including a simple noun
2Middle Englishþethe; Second-person singular pronoun indicating a...
3Middle EnglishinAny kind of accomodation; particularly; A home or...
4Old Englishinnin; inn
5Old Englishinneinside, in; indoors
6Proto-Germanicinnaiwithin, inside
7Proto-Germanicinin; into
8Proto-Indo-Europeanénin

via English of

StepLanguageWordMeaning
1EnglishofAPI; Expressing distance or motion; "Expressing...
2Middle Englishofof; off; until
3Old Englishofof, from, off, out of
4Old Englishæfof
5Proto-Germanic*ab
6Proto-Indo-Europeanapó
Every word from Proto-Indo-European -yetiEvery word from Ancient Greek -έωEvery word from Proto-Indo-European -éyeti