The broad lower end of the symbol is rather an accidental pit in the stone than an attempt at a diacritic mark - the word is regei, in all probability the early dative form of rex, " king."
The oldest form of the word is Eriu, of which Erinn is the dative case.
ALEXANDER OF APHRODISIAS, pupil of Aristocles of Messene, the most celebrated of the Greek commentators on the writings of Aristotle, and styled, by way of pre-eminence, o E fl-yrl-riis (" the expositor"), was a Dative of Aphrodisias in Caria.
The inscription is earlier than the Latin change of s between vowels into r, for Numasioi is the dative of the older form which corresponds to the later Numerius.
The rounded form ofy is found with the value of G in R EC E I, which is probably the dative of rex.
Again, " with " is in Homer auv (with the dative), in Attic prose perec with the genitive.
Triphthongs are not uncommon, th Sanskrit avebhyas (dative plural of acva, a horse) is in Zend in paeibyo; Sanskrit krnoti (he does), Zend kerenaoiti.
Some of their innovations in grammatical terminology have lasted until now: we still speak of oblique cases, genitive, dative, accusative, of verbs active (O p06), passive (157rTLa), neuter (ou&repa), by the names they gave.
There are three declensions, each with a definite and indefinite form; the genitive, dative and ablative are usually represented by a single termination; the vocative is formed by a final o, as memmo from memme, " mother."