In order to use {-ghach} on a verb, this verb needs to have a suffix, e.g. {naDqa'ghach} for "re-commendation".

If though, this verb doesn't have a suffix of one of the 9 types of verb suffixes, but has only a rover, then can we {-ghach} it anyway ?

I know that we can say {naDHa'ghach} for "discommendation", but since the {-Ha'} is a "fixed" rover (with regards to its position in a verb), I was wondering:

Can we say e.g. {Quchbe'ghach} for "unhappiness" ? Or {QuchQo'ghach} for "the condition/state of refusing to be happy" ?

I believe this are all right. I'm more interested in, and less certain about, words like Quchbejghach certain happiness, Quchlaw'ghach apparent happiness, and Quchqu'ghach great happiness. They seem odd to me, because they are using verb suffixes to do what noun suffixes could do, if only you had a noun for happiness. Although Quchba'ghach obvious happiness couldn't be done with a noun suffix.

By the way, I'd say that QuchHa'ghach is unhappiness while Quchbe'ghach is simply a lack of happiness, but not necessarily unhappiness.

-- 
SuStel
http://trimboli.name