isai = father (noun) (some things Google found for "isai": a common term; a masculine first name that is from the Old Testament of the Bible; ISAI is an acronym for International Society of Applied Intelligence; a last name; IRAI ISAI Tamil Christian radio and TV; FCG ISAI Consulting of Finland offers business training; ISAI Technologies is a UK software development company)
Word derivation for "father" :
Basque = aita, Finnish = isä
Miresua = isai
This is another new word. And I'm dropping back to my usual, every four days, schedule of posts to this blog.
Note the interesting similarity between the Basque word for father (aita) and the Finnish word for mother (äiti).