Where does “mouthbreeder” come from?

mouthbreeder (English) comes from English mouth, from Middle English mouþ, from Old English mūþ, from Proto-West Germanic *munþ, from Proto-Germanic munþaz, from Proto-Indo-European men- — to think, mind; spiritual activity; to stay,...

Ancestry of “mouthbreeder”, step by step

mouthbreeder traces back through two separate lines of ancestry.

via English mouth

StepLanguageWordMeaning
1EnglishmouthThe opening of a creature through which food is...
2Middle EnglishmouþAlternative form of mouth
3Old Englishmūþmouth, opening, door, gate
4Proto-West Germanic*munþmouth
5Proto-Germanicmunþazmouth
6Proto-Indo-Europeanmen-to think, mind; spiritual activity; to stay,...

via English breeder

StepLanguageWordMeaning
1EnglishbreederA person who breeds plants or animals; A person...
2EnglishbreedTo produce offspring sexually; to bear young; To...
3Middle EnglishbredenAlternative form of breiden; to make broad;...
4Old Englishbrēdanto bear offspring
5Proto-GermanicbrōdijanąTo keep warm; brood; To breed
6Proto-Indo-Europeanbʰreh₁-warm; breath, mist, vapour, steam
Every word from Proto-Indo-European men-Every word from Proto-Germanic munþazEvery word from Proto-West Germanic *munþ