The fitting word

1) I love a good mot juste.
2) I love the fact that there are circumstances where mot juste is, itself, a mot juste.
3) "Ignosticism" is a mot juste.

Or wait, is it? On reflection, mot juste implies skill in selection, whereas ignosticism is a coining (or a portmanteau? Maybe I mean wybrid.

I suppose I'm looking for a phrase that says "I like that word/ You've coined a goood one there, Sherwin." Does Mot Juste extent to that kind of use? What do you think, people who work with words for a living?

In closing: Kudos to Rabbi Wine.