-inus

• -ānus, -ēnus, -iānus, -ūnus
• -ānos, -ēnos, -īnos

From Proto-Italic *-īnos, from Proto-Indo-European *-iHnos. Cognate with Ancient Greek -ινος (-inos) and Proto-Germanic *-īnaz.

• (Classical Latin) IPA^(key): [iː.nʊs]
• (modern Italianate Ecclesiastical) IPA^(key): [i.nus]

-īnus (feminine -īna, neuter -īnum); first/second-declension suffix

1. Of or pertaining to; -ine; Can indicate a relationship of position, possession, or origin.

The suffix -īnus is added to a noun base (especially a proper noun) to form an adjective.

Examples:

‎collis (“hill”) + ‎-īnus → ‎collīnus (“of a hill, growing on a hill”)

‎fungus (“mushroom, fungus”) + ‎-īnus → ‎fungīnus (“of a mushroom”)

‎Liguria (“Liguria”) + ‎-īnus → ‎Ligurīnus (“Ligurian”)

First/second-declension adjective.

• -ēnsis, -icus

In most cases, a borrowing from Ancient Greek -ῐνος (-ĭnos), as in cannabinus (“hempen; of hemp”) from κᾰννᾰ́βῐνος (kănnắbĭnos) and prasinus (“leek-green”) from πράσῐνος (prásĭnos).

In addition, traces of an inherited suffix -ĭnus can be found in some native Latin words, e.g. frāxinus (“ash tree; of ash wood”), although the inherited version seems to have become unproductive before the historical Latin period (and apparently was changed to -nus by syncope in a number of contexts).^[1]

• (Classical Latin) IPA^(key): [ɪ.nʊs]
• (modern Italianate Ecclesiastical) IPA^(key): [i.nus]

-inus (feminine -ina, neuter -inum); first/second-declension suffix

1. alternative form of -īnus (found especially in adjectives denoting colors or ones derived from the names of plants, spices, perfumes, minerals, or exotic cloths).^[1]

First/second-declension adjective.