Cynrethian is a language set in the mythical world of Antir where my novel series Ancient Realms takes place (along with Thyrrian, Dhraexian, Elsian, Gu'telan, Imrizonian and so on). I've written the first book entitled the Fate of Dhraexia and have just started writing the second entitled the Undercity. The Cynrethian language descended from the old tongues of the southern people who migrated to the isle wedged in between the two great kingdoms of Thyrria and Dhraexia 4000 years ago. Long uncivilised, the peoples of Cynrethia were annexed by both the Thyrrians and Dhraexians for over 1000 years. Seeing his people suffer, the young warlord Pyrhȧrth (Pureheart) led a successful rebellion against the invaders and the long years of hardship began to disappear. With the help of the Thyrrian princess Kiresha he managed to unite the land crowning himself king and taking Kiresha as his queen. Ever since then, the island nation of Cynrethia has prospered and due to the royal connections - Cynrethia has been protected by its neighbours who were once enemies.
Though civilised, the peoples of Cynrethia are very spiritual. Their pantheon consists of dozens of Gods each having a female counterpart, but above all they worship Luna - the Goddess of the moon. Their flag consists of a white triangular glaive with blue in the background. The name Cynrethia itself may be broken down into: cyn (blade), rethȧn (to throw) = cynreth (throwing blade/glaive/chakram). The suffix -ia means 'land' from tirȧ (land). Hence Cynrethia means the land of the glaive (which is a symbol and mythical weapon of the Goddess Luna).
Bear with me as I'm not very good at transcribing sounds into IPA. Anyway, here's a try:
*The letter y as an initial is pronounced /j/ and elsewhere is /ɨ/. When /j/ is within a word, it is written as j.