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-icus
From i-stem + -cus, occurring in some original cases and later used freely. Cognate with Ancient Greek -ικός (-ikós), Proto-Germanic *-igaz (Old High German and Old English -ig, Gothic -𐌴𐌹𐌲𐍃 (-eigs)), Sanskrit -इक (-ika), Proto-Slavic *-ьcь (the last has fossilized into a nominal agent suffix, but probably originally also served adjectival functions).
-icus (feminine -ica, neuter -icum); first/second-declension suffix
The suffix -icus is added to a noun, adjective, verb, etc., to form an adjective.
First/second-declension adjective.
Number | Singular | Plural | |||||
---|---|---|---|---|---|---|---|
Case / Gender | Masculine | Feminine | Neuter | Masculine | Feminine | Neuter | |
Nominative | -icus | -ica | -icum | -icī | -icae | -ica | |
Genitive | -icī | -icae | -icī | -icōrum | -icārum | -icōrum | |
Dative | -icō | -icō | -icīs | ||||
Accusative | -icum | -icam | -icum | -icōs | -icās | -ica | |
Ablative | -icō | -icā | -icō | -icīs | |||
Vocative | -ice | -ica | -icum | -icī | -icae | -ica |