From Vulgar Latin -torius, -torium, and feminine -toari, toare from Vulgar Latin -toria, -toriam, both from Latin -tor. Ultimately from Proto-Italic *-tōr, from Proto-Indo-European *-tōr < *-tor-s.
-tor (plural -tori, feminine -toari/-toare)
-tor (v-v?, additive?, VTV → VsV?)
From Proto-Italic *-tōr, from Proto-Indo-European *-tōr < *-tor-s.
The ō from the nominative case was made common to all cases. Afterwards nom.sg. -tōr > -tor, by Latin sound laws. Paradoxically, as in other r-stems (soror, -or), in the resulting paradigm the one form with a short stem vowel is the only form whose stem was etymologically long.
Cognate to Sanskrit: -तृ (-tṛ) (-ता sg (-tā, nom.)).
Cognate to Ancient Greek -τωρ (-tōr), as in δώτωρ (dṓtōr), and -τήρ (-tḗr), as in δοτήρ (dotḗr), from a separate ablaut *-tḗr (agentive suffix).
Compare Latin -trum (instrumental suffix), from Proto-Indo-European *-tr-o-m (instrumental suffix).
-tor m (genitive -tōris); third declension
The suffix -tor is added to the fourth principal part of a verb to create a third-declension masculine form of an agent noun.
The suffix -tor occasionally is added to a noun to create an agent noun, often in the extended form -ātor, as if from a first-conjugation verb.
Third-declension noun.
Case | Singular | Plural |
---|---|---|
Nominative | -tor | -tōrēs |
Genitive | -tōris | -tōrum |
Dative | -tōrī | -tōribus |
Accusative | -tōrem | -tōrēs |
Ablative | -tōre | -tōribus |
Vocative | -tor | -tōrēs |
Inherited from Latin -tor (through a Vulgar Latin form *-torius, and feminine -toare from *-toria). With some neologisms based on French -teur. Ultimately from Proto-Italic *-tōr, from Proto-Indo-European *-tōr < *-tor-s.
-tor m or n (feminine singular -toare, masculine plural -tori, feminine and neuter plural -toare)
-tor m or n (feminine singular -toare, masculine plural -tori, feminine and neuter plural -toare)