Question

[Muzer]

Yes, this can't be stressed enough: when there is both a gender-neutral and a gender-specific form of a word, you should in almost all cases use the neutral one, unless using the gender-specific one would improve clarity. Though I'm not sure if this applies to yawntu and co. as well, I don't see why it wouldn't.

[omängum fra'uti]

Well there is no gender specific form of yawntu, only of muntxatu

[Muzer]

Oh, whoops - I must have been confusing them.

[Uktxum]

Oh, whoops - I must have been confusing them.

Um.. which one is which then?

[kewnya txamew'itan]

They describe different things. Muntxatu describes your mate and, as the na'vi mate for life, this would be closest to husband/wife/unmarried-life-partner whilst yawntu is simply a beloved person, depending on which love "tìyawn"  is, this may include or be limited to family members and close friends, that said, I believe that, given things Frommer has said in the past, it includes eros and therefore a yawntu would refer to any partner and would be best applied to girl/boyfriends (although not, I believe to more casual relations such as friends-with-benefits).

[Uktxum]

They describe different things. Muntxatu describes your mate and, as the na'vi mate for life, this would be closest to husband/wife/unmarried-life-partner whilst yawntu is simply a beloved person, depending on which love "tìyawn"  is, this may include or be limited to family members and close friends, that said, I believe that, given things Frommer has said in the past, it includes eros and therefore a yawntu would refer to any partner and would be best applied to girl/boyfriends (although not, I believe to more casual relations such as friends-with-benefits).

Irayo. That helps ALOT. Lu prrte' plltxe hu aynga(It's a pleasure to talk with you guys)
P.S.I hope I said that right
P.P.S. That's my first Sentence in Na'vi!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[Uktxum]

Alrighty, how about this one? I pledge allegiance to the flag of the United States of America, and to the republic for which it stands, one nation under God, indivisible, with liberty and justice for all.

[kewnya txamew'itan]

Alrighty, how about this one? I pledge allegiance to the flag of the United States of America, and to the republic for which it stands, one nation under God, indivisible, with liberty and justice for all.

That's a very tricky one seeing as we have no word for "pledge", "republic", "indivisible", "liberty" or "justice".

But I'll take a stab:

'ivuyeyk oeti u'imit olo'ä a'awstengyawnem sì kllpxìltul a lu tsau'imi tsaru ulte lu 'awa kllpxìtu a eo Eywa ulte fko ke tsun mivun'i ulte tsatsengero frapo frapohu ultxa si nìmeuiä ulte tsatsengero kawtu kawtut ke yivìm

I'm not sure about the horrible extended relative clause attached to the first kllpxìlt but I couldn't see a better way to go about it.