Where does “-iss-” come from?

-iss- (Old French) comes from Latin -sc-, from Latin -esco, from Latin -eo, from Proto-Italic -ēō, from Proto-Italic -ējō, from Proto-Indo-European -éh₁yeti, from Proto-Indo-European -yeti — Creates transitive imperfective verbs from roots.

-iss- (Old French): An inchoative infix appearing on many verbs, and integrated into the conjugation of some

Definitions

  1. An inchoative infix appearing on many verbs, and integrated into the conjugation of some

Ancestry of “-iss-”, step by step

StepLanguageWordMeaning
1Latin-sc-
2Latin-escoForms verbs from adjectives meaning "become "
3Latin-eoForms stative verbs from adjectives; dative...
4Proto-Italic-ēōForms stative verbs, indicating a state of being;...
5Proto-Italic-ējō
6Proto-Indo-European-éh₁yetiThematicization of the athematic stative verbal...
7Proto-Indo-European-yetiCreates transitive imperfective verbs from roots

Words derived from “-iss-

Every word from Proto-Indo-European -yetiEvery word from Latin -eoEvery word from Latin -esco