Where does “speculatif” come from?

speculatif (Old French) comes from Latin speculātīvus, from Latin speculor, from Latin specula, from Latin spes, from Proto-Italic spēs, from Proto-Indo-European spéh₁s, from Proto-Indo-European speh₁- — to succeed, to prosper.

Ancestry of “speculatif”, step by step

speculatif traces back through two separate lines of ancestry.

via Latin speculātīvus

StepLanguageWordMeaning
1Latinspeculātīvusspeculative
2LatinspeculorI watch, I observe; I examine, I explore; I spy
3Latinspeculawatchtower, lookout; nominative plural of...
4Latinspeshope; expectation, anticipation, apprehension
5Proto-Italicspēshope
6Proto-Indo-Europeanspéh₁sprosperity, success
7Proto-Indo-Europeanspeh₁-to succeed, to prosper

via Late Latin speculativus

StepLanguageWordMeaning
1Late Latinspeculativusspeculative
2Latinspeculārī

Words derived from “speculatif

Every word from Proto-Indo-European speh₁-Every word from Proto-Indo-European spéh₁sEvery word from Proto-Italic spēs