-oi

From the Ancient Greek -οι (-oi), the second-declension masculine nominative plural case ending — the plural form of -ος (-os); compare the equivalents of the Latin second declension (-us → -ī), with which the Grecian case endings are usually substituted in English words, especially in the plural.

• (Received Pronunciation) enPR: -oi, IPA^(key): /-ɔɪ/

-oi

1. plural of -os

• I/O, IO, Io, i/o, io

From Latin -ōneus, -ōnius. See also the feminine -oaie. Compare Aromanian -onj, -onjiu. Additionally, cf. Italian -one, Spanish -ón, which are also augmentative suffixes.

• IPA^(key): /oj/

-oi n (plural -oaie)

1. augmentative suffix, used to indicate a larger version of (e.g. ‎piatră (“rock”) + ‎-oi → ‎pietroi (“boulder”), ‎furcă (“pitchfork”) + ‎-oi → ‎furcoi (“big pitchfork”))

-oi m (plural -oi)

1. used to make a masculine version of (e.g. ‎pasăre (“bird”) + ‎-oi → ‎păsăroi (“male bird”), ‎vulpe (“fox”) + ‎-oi → ‎vulpoi (“male fox”))
2. in a few cases, used as a deprecative or slightly derogatory suffix, especially relating to people (e.g. ‎bulgar + ‎-oi → ‎bulgăroi, ‎chinez + ‎-oi → ‎chinezoi)

• -oaie

• -oc