There is another problematic example of tlhegh known:  nugh tlhegh  (lit. "society rope") from the KCD novelization (was it used in KCD itself?):

  "Pok has yet to complete the Second Rite of Ascension. In the eyes of the
    nugh tlhegh he is still a boy."

This line does appear in the game: https://youtu.be/mcTGRaPTNOQ?t=29m9s  The actor pronounces it something like noog kleH. It does not occur in the Language Lab, which is the canonical part of KCD.

The script of the game was not written or vetted by Okrand, and is not Okrandian canon (or even officially Star Trek canon, for that matter).

-- 
SuStel
http://trimboli.name