What are common greetings and phrases in selesh? (such as; hello, how are you, nice to meet you, goodbye, etc.)
Hello Anon! I've posted most of these elsewhere but here they are again! Some are canon, many are added.
The basic hello/goodbye would be: Paavoa, Isha (Paavoa is actually an idiom meaning “come know joy/light”, with the longer historical phrase being “knowing you are here brings my heart joy/light”)
A more general 'nice to meet you' phrase might be: Joh voyi pasgoh! [I am happy + person I have met!] or if you want to emphasize that the person is still a stranger, but being greeted: Joh voyi gova.
A polite How are you? in the same type of situation would be: Ille'vy goh? or Ille'vy gara? Goh/gara is the best general pronoun, but there are others if the relationship is clearer: toh is for a peer, mohnin would be more respectful for an elder, poh for a child/younger person. It's all agender.
...Incoming deluge of additional words and phrases...
An idiom that can mean a lot of things but is generally "you're welcome" is just: Yevoll
This one's a canon phrase, from Techiix: Kedi gossa, di javegara kepasgom. [There are no strangers, only unmet friends.]
Tabas tiyrrna illeh. - This feels/is crazy.
Skeelu… tabas taosa. - This is disgusting…I love it.
Eddo, fiki tabas. - Thanks, I hate it. [Thanks hate this.]
Joh jinni - I’ve got this. [I am covering [this]]
by, 'vy - n, adv - question, ask, query; adv affixed to a conjugated verb
byr; by, byt bym - v - to ask, to question
bylas - n, adv - an entreaty or request, something you are asking another to do
bylasear'vy; bylase'vy, bylaset'vy, bylasem'vy - v - to entreat or request; please do this
eddor - v - to appreciate, give thanks, show gratitude
eddora - n, adj - gratitude, thankfulness, appreciation
Eddo hanti bareen - I am thankful for family
Eddo hanti jove javegara, tev. - I am thankful for my friends, too.
ishar, isha, isham, ishat - v - goodbye, to part ways.
isharay - goodbye into the blackest night, poetic. It lends its name to an angaran weapon.
okoli, oko - hello, hi; a casual greeting
paavoa - welcome, a common angaran greeting; “come know joy”, with the longer historical phrase of “knowing you are here brings my heart joy”
Yevoll - idiom - it's good, brings joy, it carries a joyful smile; an equivalent for you're welcome or de nada