From earlier iūcundus, with the vowel altered on the basis of iocus[1] — unstressed short ŏ and long ō came to be pronounced identically by the Late Latin (or Proto-Romance) period.
More often attested as iōcundus, the alternative iŏcundus is found in the poet Avianus (dactylic pentameter): Grātĭă reddātur | undĕ iŏcundă vĕnit.[2]
iōcundus (feminine iōcunda, neuter iōcundum, adverb iōcundē); first/second-declension adjective (Late Latin)
First/second-declension adjective.
singular | plural | ||||||
---|---|---|---|---|---|---|---|
masculine | feminine | neuter | masculine | feminine | neuter | ||
nominative | iōcundus | iōcunda | iōcundum | iōcundī | iōcundae | iōcunda | |
genitive | iōcundī | iōcundae | iōcundī | iōcundōrum | iōcundārum | iōcundōrum | |
dative | iōcundō | iōcundae | iōcundō | iōcundīs | |||
accusative | iōcundum | iōcundam | iōcundum | iōcundōs | iōcundās | iōcunda | |
ablative | iōcundō | iōcundā | iōcundō | iōcundīs | |||
vocative | iōcunde | iōcunda | iōcundum | iōcundī | iōcundae | iōcunda |