Right now, I got a different question though.
We named our first children Hadassah and Asahel. We think that such names can really honor God by their meaning. We still want to use a meaningful hebrew name for the third one we expect soon (a boy). We liked Zakai, but we want something a bit longer. So we decided to make things more complex.

1- We were wondering if this would still make sense if we superposed Ish (being/there is) + Zakai (pure). We got this idea while looking at Issacar's etymology (Ish + sakar). We're not used to inventing new names

2- The other thing is that we'd like it to be spelled Isacai. In French (because we speak French obviously), s can be pronouced z so I figured it could work as long as the name is pronounced i-Zah-KIE. Am I right?
From what I understand, it's important that the name keeps the correct pronunciation if we want to keep the hebrew meaning. Right? We don't just want a name that sounds good, we want it to mean the intended meaning.
Our criteria is: if a Hebrew speaker hears the name, will he understand 'ish zakai'.
Thanks a lot for your help. I'm really looking forward to your answer(s).
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Zakai: https://www.kidpaw.com/names/zakai/pron ... 20religion