From Old Irish cinned. By surface analysis, cinn +‎ -adh.

• (Waterford, Cork) IPA^(key): /ˈcɪɲə/
• (Kerry, Galway) IPA^(key): /ˈcɪn̠ʲə/
• (Mayo) IPA^(key): /ˈcɪn̠ʲuː/
• (Ulster) IPA^(key): /ˈcɪn̠ʲu/

cinneadh m (genitive singular as substantive cinnidh, genitive as verbal noun cinnte, nominative plural cinntí)

1. verbal noun of cinn
2. determination, decision, ascertainment

   Synonym: cinntiúchán

3. (sports) decision
4. finding, conclusion

   Synonym: comhairle

Substantive

Verbal noun

• cinneadhtheoiric
• féinchinneadh

See the etymology of the corresponding lemma form.

• (Waterford, Cork) IPA^(key): /ˈcɪɲəɡ/
• (Kerry) IPA^(key): /ˈcɪn̠ʲəɡ/
• (Galway) IPA^(key): /ˈcɪn̠ʲəvˠ/
• (Mayo) IPA^(key): /ˈcɪn̠ʲuː/
• (Ulster) IPA^(key): /ˈcɪn̠ʲu/

cinneadh

1. autonomous past indicative of cinn

See the etymology of the corresponding lemma form.

• (Waterford, Cork) IPA^(key): /ˈcɪɲəx/
• (Kerry) IPA^(key): /ˈcɪn̠ʲəx/
• (Galway) IPA^(key): (before sé, sí, sibh, siad) /ˈcɪn̠ʲətʲ/, (elsewhere) /ˈcɪn̠ʲəx/
• (Mayo) IPA^(key): (before sé, sí, sibh, siad) /ˈcɪn̠ʲətʲ/, (elsewhere) /ˈcɪn̠ʲuː/
• (Ulster) IPA^(key): (before sé, sí, sibh, siad) /ˈcɪn̠ʲətʲ/, (elsewhere) /ˈcɪn̠ʲu/

cinneadh

1. inflection of cinn:
   1. analytic past subjunctive
   2. third-person singular imperative

• Ó Dónaill, Niall (1977) “cinneadh”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN
• de Bhaldraithe, Tomás (1959) “cinneadh”, in English-Irish Dictionary, An Gúm
• “cinneadh”, in New English-Irish Dictionary, Foras na Gaeilge, 2013–2025

From Old Irish ciniud (“offspring, children, descendants”).

cinneadh m (genitive singular cinnidh, plural cinnidhean)

1. clan, kin, kindred, surname, tribe, nation