humanus.

Unknown. The term is probably connected to homō (“human”), itself from Proto-Indo-European *ǵʰmṓ. Perhaps from *hūm (“earth”) (see humus) -ānus. The form *hūm could possibly derive from earlier *hōm, with a phonological development similar to Latin fūr, from *fōr. However, De Vaan suggests that—in the example of fūr—the labial consonant may have conditioned the sound shift. Moreover, De Vaan suggests that a word-final nasal would be dropped following *ō, implying that the final *m in *hōm would have to be restored on the model of the oblique cases (i.e. an accusative singular form *hōmem). Alternatively, the term has been connected to Old Irish doíni and derived from Proto-Indo-European *ǵʰdʰoym-, though De Vaan suggests that the source of *-oy- in this form is uncertain.

Unknown. The term is probably connected to homō (“human”), itself from Proto-Indo-European *ǵʰmṓ. Perhaps from *hūm (“earth”) (see humus) -ānus. The form *hūm could possibly derive from earlier *hōm, with a phonological development similar to Latin fūr, from *fōr. However, De Vaan suggests that—in the example of fūr—the labial consonant may have conditioned the sound shift. Moreover, De Vaan suggests that a word-final nasal would be dropped following *ō, implying that the final *m in *hōm would have to be restored on the model of the oblique cases (i.e. an accusative singular form *hōmem). Alternatively, the term has been connected to Old Irish doíni and derived from Proto-Indo-European *ǵʰdʰoym-, though De Vaan suggests that the source of *-oy- in this form is uncertain.