Ah -- I had just checked the entry under puer, thinking that any odd variants would be listed there. But apparently it's more common than I thought, enough so to merit an entry of its own, even.
Either way, I guess it's a good thing to mention exceptions. There must be other pairs like puer/puera, though I can't think of any other noun like that at the moment (I can only think of the adjective liber/libera/liberum).I wasn't trying to be critical, just engaging in playful speculation
Hm, I'm not sure about that, actually. The OLD has different entries for adulter and adultera as nouns and for adulter, a, um as an adjective — so did it start off as an adjective or a noun?There's adulter/adultera but it's basically an adjective that can be used as a noun.
Adulter adultera is interesting because it's literally ad-ulter, but ulter has the feminine and neuter forms ultra ultrum.There's adulter/adultera but it's basically an adjective that can be used as a noun.