In general, the Grat'han language is rich in sound and texture, with a non-universal tendency toward multisyllabic compound words, and toward hard consonants in male names and soft consonants in female ones. A simple "dictionary" follows -- these words are significant only in the sense that they happen to have come up in the course of the game.
English - Grat'han:
black = Thah
both (prefix to certain compound words consisting of two nouns) = T (T' when preceding a hard consonant)
bud (a plant's shoot) = Neyl
dance = Ahren
dew(drops) = Nisin
dusk jay (a kind of Grat'han bird) = Rovaru
entry = Thestrin
feather = Lacreth
fire = Reyla (sometimes spelled Reila)
gift = Felis
green = Leth
home = Mona
laughter = Alimna
point = Krendas
river = Alua
sun = Narra
tide = Arten
treasure = Anyoth
water = Sefi
weapon = Volk
Grat'han - English:
Ahren = dance
Alimna = laughter
Alua = river
Anyoth = treasure
Arten = tide
Ato = Living (things)
Felis = gift
Krendas = point
Lacreth = feather
Lamna = Searching
Leth = green
Mona = home
Narra = sun
Neyl = bud (a plant's shoot)
Nisin = dew(drops)
Reyla or Reila = fire
Rovaru = dusk jay (a kind of Grat'han bird)
Sefi = water
T or T' (prefix to certain compound words consisting of two nouns) = both
Thah = black
Thestrin = entry
Volk = weapon