If “crithir”, spark or quivering, were derived in OI from “crith”, could “beithir” be a relatively late creation derived from “bith” and/or “betha”? Possibly with semantic leakage from “cethir”? Maybe a portemaneau, a made-up name for a made-up creature? Tá a fhios agam gur beag an baol é, ach toisc nach bhfuil aon réiteach eile againn, is fiú an cheist a chur.
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> On Jan 1, 2019, at 11:42 PM, David Stifter <[log in to unmask]> wrote:
> From: Old-Irish-L <[log in to unmask]> On Behalf Of Dennis King
>> Is dócha, faoin am seo, go bhfuil tú tar éis súil a chaitheamh ar chuile fhocal dár chríoch -thir. Mar sin féin …
>> What do you make of the ending of “crithir” as derived from “crith” or otherwise?
> The problem is that what in OIr. looks synchronically like a uniform suffix -thir can have a multitude of origins. Each word has to be analysed on its own terms. In the Milan Glosses database, Aaron Griffith analysed crithir as an i-stem with question mark. Thisis probably the most straightforward analysis given what is attested, but other analyses would also be possible. The attestations of beithir are of a different nature, though, so the analysis of the one cannot be simply transferred unto the other.