réasún

• (Munster) IPA^(key): /ɾˠeːˈsˠuːn̪ˠ/
• (Connacht) IPA^(key): /ˈɾˠeːsˠuːnˠ/, /ˈɾˠeːsˠuːn̪ˠ/
• (Ulster) IPA^(key): /ˈɾˠeːsˠunˠ/, /ˈɾˠeːsˠun̪ˠ/

From Middle Irish résún (“reason”), from Anglo-Norman raisun, from Latin ratiō.

réasún m (genitive singular réasúin, nominative plural réasúin)

1. reason, reasoning faculty
2. reasonableness, sense
3. justification, motive, cause

• réasúnaigh
• réasúnacht

• réasúnta

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

réasún m (genitive singular réasúin, nominative plural réasúin)

1. winkers

• G. Toner, M. Ní Mhaonaigh, S. Arbuthnot, D. Wodtko, M.-L. Theuerkauf, editors (2019), “résún”, in eDIL: Electronic Dictionary of the Irish Language
• Ó Dónaill, Niall (1977) “réasún”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN
• Entries containing “réasún” in English-Irish Dictionary, An Gúm, 1959, by Tomás de Bhaldraithe.
• Entries containing “réasún” in New English-Irish Dictionary by Foras na Gaeilge.
• Quiggin, E. C. (1906) A Dialect of Donegal, Cambridge University Press, page 60