trethan

Old Irish

Etymology

Has been folk-etymologized as tre- (“through”) +‎ tonn (“wave”), but Stifter believes that in reality it is from the oblique stem of triäth (“sea”).

Noun

trethan m (genitive trethain)

1. sea, especially when stormy or rough
   • c. 845, St Gall Glosses on Priscian, published in Thesaurus Palaeohibernicus (reprinted 1975, Dublin Institute for Advanced Studies), edited and with translations by Whitley Stokes and John Strachan, vol. II, pp. 49–224, Sg. 66^b1

     trethan ― glosses Latin gurges

Inflection

Masculine o-stem
	Singular	Dual	Plural
Nominative	trethan	trethanL	trethainL
Vocative	trethain	trethanL	trethnuH
Accusative	trethanN	trethanL	trethnuH
Genitive	trethainL	trethan	trethanN
Dative	trethanL	trethnaib	trethnaib
Initial mutations of a following adjective: H = triggers aspiration L = triggers lenition N = triggers nasalization

Mutation

Old Irish mutation
Radical	Lenition	Nasalization
trethan	threthan	trethan pronounced with /d(ʲ)-/
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

Further reading

• G. Toner, M. Ní Mhaonaigh, S. Arbuthnot, D. Wodtko, M.-L. Theuerkauf, editors (2019), “1 trethan”, in eDIL: Electronic Dictionary of the Irish Language