In Irish, it's 'muc',
The plural form in Welsh is "moch" which is even more similar.
"Mochyn" sounds like "mugen", which means "they moo" in Spanish. :P Something cows do. It also reminds me of "mucca", which is "cow" in Italian. Either way, it's not very pig-like to me! :v
The mochyn is in the muc.
Not by the hair on my chinny-chin-chin. You can't fool me; I'm a shrewd mochyn!
the mochyn is mochyning!