Perhaps "to pose as" could be something like "vendaas", which is essentially "vordaas" (disguise) and "venselor" (model) spliced together. Any thoughts?

Yuundak has a nice sound to it, but ultimately I prefer wundaakah to it. Canon Dovahzul, as stated above by @Vriilomdren has wunduniik as traveler and wundun as travel. So, wundaakah would be more accurate, in my opinion.

Also, on "pose, to pose as," vendaas sounds good, yeah. Both words used in creating it already sound similar, which makes it easier. However, I also suggest "genunok," which is "genund" and "nok" together.

For emerge, Mal Kendov (with 'alok') and Amativ Erei Dinok (with 'lif') both put forth an interesting strategy of repurposing or giving a new sense to an existing word.  I think this strategy actually fits well with the meaning of emerge, but I would suggest a different original word.  What about 'thul'?  Thunder emerges or comes out of nothing or something else (not to get bogged down with the actual physics, but focus on how we perceive thunder).

'Emerge' as an additional sense to the word 'thul.'

(Alternatively, 'thulok' or 'thalok' to combine 'thul' with 'alok.')

@BuDoSil I like both 'druth' and 'nudreh' for "execute." 

Also, for "to man, fortify, occupy a station or position," I liked the sense of 'aam' someone mentioned with serving rather than something with 'jun' or 'jul' that rely on the English male expression because dov aren't exclusively male (dovahkiin can be male or female).   Here are some posibilities (trying to keep them short):

mulkuz - strong + sieze/take

zinkriist - honor + stand

deyn - modification of keep/guard ('dein')

Tangent ideas for Pose (based on "kos", "be")

I am really liking druth, deyn, and kovey.

I highly agree with druth, deyn and kovey.

On second thought, kovey is too close to govey "to remove." Kosaamight be my next choice.

could try ahmeyz. where pose has an synonym to become which is also a verb and i thought it best to keep ahm as a root word for serve.

Rok Ahmeyz rut wah un junaar.

i also like druth...it sounds snappy and would fit well imo.

Vriilomdren
@Mirkrilaar I'm really feeling "Wundaakah". I like how it connects to the canon "Wunduniik", seeing as how travelers embark on journeys and adventures almost constantly, as is the nature of the word. Although, I feel just as strongly about @Kobious 's "Yundaak". I think it's an interesting take on its roots. I'm all for either one.

i feel like wunduniik should be shortened...feels too long...how about Wundreh instead since wund is quest and dreh is do. was going to go with wundiik but thats apparently already a word lol.

also maybe Aloktir or Loktir for emerge. aloktir is more literal so maybe lok tir combining alok which is arise with tir which is out.

Rok Aloktir nol gul. or: Rok Loktir nol gul.

What about for Happiness "Nokzrivah"

This is my first word, so please be a little leanient. 

@Picnic Basketcase, 

Please submit words of your own interest to the Word Submission Page

Only post ideas for needed words listed on this thread's Front Page

P.S. "Happiness" is already a word. See Unazom. Please make sure any and all words you are planning on submitting are nonexistent and have no close and/or substitutional synonyms before submitting.

Thank you.

What if emerge could be a mix of nebenbo, submerge, and tir do, out of?

Like maybe... Nibtenro? This is my first time doing this, so it might not be too good.