"Threshold Glossary" by Ruth E. Morrison

I. Phonology

The phonology of the Aidean language is uncomplicated; most of the sounds are spelt exactly the same way as they are in English (including Th and Sh. However, there are a few general exceptions to this rule:
C is pronounced as in the 'ch' sound in church.
Z is pronounced as in the 'z' sound in azure, or the 's' sound in measure.
R is pronounced as in the 't' sound in water or butter (at least in my dialect of American English), or as the single 'r' in Spanish (e.g. para).
Y is never a vowel, and does not change the sound of vowels that may be next to it. E.g. the name Jayen is not pronounced Jay-an or J-eye-an, but as Jah-yen.
All double consonants are pronounced twice, e.g. nn is pronounced like the n's in penknife.

All vowels are pronounced as individual sounds, and are more or less as in Latin, rather than as they are in English. They also have long forms, to wit:
A: short as in pot, long as in father.
E: short as in pet, long as in pate.
I: short as in pit, long as in peet.
O: short as in boat. The long form is simply a longer pronounciation of the short form.
U: short as in book, long as in boot.

Syllables are only V, CV or CVC, with the contraint that P, B, T, D, K, G, C, J, and Y cannot occur at the end of a syllable.

II. Gender and Names

Words in the language of Aidea don't have innate grammatical gender, but names can be made feminine and masculine by the order of the last two letters. Male names end with consonants, and female names end with vowels. The change a masculine name to its feminine form, you simply switch the order of the last two letters. Thus:
Aloar ––> Alora
Mareth ––> Marthe
Cirel ––> Cirle
Canar ––> Canra

Because of the letters mentioned above that cannot come at the end of a syllable, certain names become unpronounceable when the last letters are reversed. When this happens, the offending cluster is simply reversed again:
Paradel ––> Paradle Paralde
Jayen ––> Jayne Janye

Some masculine names were shortened from their original forms because they were not original Aideane names, but because of the phonological constraints they are in their long form for the feminine.
Sleth (shortened from Saleth) ––> Slthe Salthe

III. Name roots

The following is a list of roots that tend to show up in Aidean names and place-names, and what they mean. If you find a name that isn't covered by the forms in this list, it simply means that the meaning has been forgotten (or that I haven't gotten around to making it mean anything yet). Parentheses within the root indicates that that letter is optional, e.g. the root Fre(s)(ra) can be found in the names Fresrayen, Fresri, or Frenido.

-an: probably a variation on -ar
-ar: a common name ending for older (traditional) Aidean names
Bar(a): star
Can: tree, or more generally, spring
Cun: war
-en: probably a variation on -yen
-eth: a common name ending for names that were originally from a non-Aidean language, since made extinct, probably spoken in the northern cities of Jesurya and Harish
Fa: name, usually the formal-use name
Facia: snow
-fea: week
Fre(s)(ra): sun, or more generally, summer
Kalen: fire
Krina: title, rank
Latha: dust
Male: wind
Na: setting or waning (as of the sun or moon)
-ne: of, or from. It can be used to refer to the current denizens of a place (such as the term Aideane or Yanne) the people who originally come from a place, or people who are all descended from a particular person.
Nido: world, land, place (generally)
Nirzu: rain
-ra: spirit, or natural force (the names of various Yanne end with -ra)
-ref: low, before, after
-ri: month
Rotha: root (of a tree)
-saf: -less, without, lacking
Seol: trickster
Shun(ra): moon, or more generally, winter
-tha: day
Thel(as): river
Theme: born, birth
-yan: high above, after (opposite of -ref)
-yar: probably a variation on -yan or -yen
-yen: a common Aideane name-ending, usually used to turn common words into somewhat non-traditional names
Yuro: bird
Zen: rising or waxing (as of the sun or moon)
Zeyon: ice
Zio(n): person, people