toimtiu

Old Irish

From Proto-Celtic *tomantiyū (“thinking”) (verbal noun of *to-manyetor (“to think”)), from *to- +‎ *mantiyū. The latter is from Proto-Indo-European *mn̥-ti-Hon-, which is a derivative of Proto-Indo-European *men-ti-s (“though, mind”). toimtiu is an exact cognate of Latin mentiō (“a mention”).[1]

toimtiu f (genitive toimten)

verbal noun of do·muinethar
opinion
- 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. 26^b7
  De dliguth trá inna n-il-toimdden sin, is de gaibthi “igitur”; quasi dixisset “Ní fail ní nád taí mo dligeth-sa fair i ndegaid na comroircnech.”
  Of the law then, of those many opinions, it is thereof that he recites “igitur”; as if he had said, “There is nothing which my law does not touch upon after the erroneous ones.

Feminine n-stem
	Singular	Dual	Plural
Nominative	toimtiu	toimtin^L	toimtin
Vocative	toimtiu	toimtin^L	toimtena^H
Accusative	toimtin^N	toimtin^L	toimtena^H
Genitive	toimten, toimdden	toimten^L, toimdden	toimten^N, toimdden^N
Dative	toimtin^L, toimtiu^L	toimtenaib	toimtenaib
Initial mutations of a following adjective: ^H = triggers aspiration ^L = triggers lenition ^N = triggers nasalization

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

Stüber, Karin (1998) The Historical Morphology of n-Stems in Celtic (Maynooth studies in Celtic linguistics; III), Department of Old Irish, National University of Ireland, Maynooth, →ISBN, page 121