-minō

Meaning

1. Old Latinmorphemesecond-person singular future active imperative ending of deponent verbs
   arbitror (“to think”) + -minō → arbitrāminō
   opperior + -minō → opperīminō

Origins

Uncertain; from Proto-Italic *-menō. Traditionally understood as a contamination of -minī (2nd-person plural passive ending) with -tō (2nd/3rd-person singular future active imperative ending). Alternatively, ultimately from an inflected form of Proto-Indo-European *-mh₁nos (“mediopassive participle”). Cognate with Umbrian -mu (e.g., Umbrian 𐌀𐌌𐌐𐌀𐌓𐌉𐌇𐌌𐌖 (amparihmu)) and Oscan -mo, syncopated from Sabellic *-mno, itself from Proto-Italic *-menō.