síans

Old Irish

síans m (genitive síansa, nominative plural síansae)

sense (meaning or reason)
- c. 800–825, Diarmait, Milan Glosses on the Psalms, published in Thesaurus Palaeohibernicus (reprinted 1987, Dublin Institute for Advanced Studies), edited and with translations by Whitley Stokes and John Strachan, vol. I, pp. 7–483, Ml. 14^d10
  Is samlid léicfimmi-ni doïbsom aisndís dint ṡéns ⁊ din mórálus, manip écóir frisin stoir ad·fíadam-ni.
  It is thus we shall leave to them the exposition of the sense and the morality, if it is not at variance with the history that we relate.

Masculine u-stem
	Singular	Dual	Plural
Nominative	síans	síans^L	síansae^H
Vocative	síans	síans^L	síansu
Accusative	síans^N	síans^L	síansu
Genitive	síanso^H, síansa^H	síanso^L, síansa^L	síansae^N
Dative	síans^L	síansaib	síansaib
Initial mutations of a following adjective: ^H = triggers aspiration ^L = triggers lenition ^N = triggers nasalization

Old Irish mutation
Radical	Lenition	Nasalization
síans	ṡíans	unchanged
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.