riail

Irish

Etymology 1

From Middle Irish ríagal, from Old Irish ríagol, ríagul (“rule; line, measure”), from Latin rēgula.

Noun

riail f (genitive singular rialach, nominative plural rialacha)

rule
1. regulation, principle
2. sway, authority; order
3. (ecclesiastical) code of discipline
4. (law) order
5. ruler; (typography) rule

Declension

Declension of riail

Fifth declension

Bare forms

Case	Singular	Plural
Nominative	riail	rialacha
Vocative	a riail	a rialacha
Genitive	rialach	rialacha
Dative	riail	rialacha

Forms with the definite article

Case	Singular	Plural
Nominative	an riail	na rialacha
Genitive	na rialach	na rialacha
Dative	leis an riail don riail	leis na rialacha

Alternative forms

riaghail

Antonyms

ainriail

Derived terms

Terms derived from riail

buanriail (“standing rule”)
riailbhéas (“regular habit, discipline”)
riailchíos (“standard rent”)
riailchiumhais f (“straight edge”)
riail chruach (“steel rule”)

riail chúirte (“rule of court”)
riailéad m (“reglet”)
riail ingir (“plumb-rule”)
riail lúdraí (“sector”)
riailmhaide m (“control rod”)

riail na dtríonna (“rule of three”)
riail ochtréid (“octet rule”)
riail phráis (“brass rule”)
riail treorach (“sighting rule”)

Etymology 2

Verb

riail

(transitive, intransitive) Alternative form of rialaigh (“rule; govern, control; regulate; govern; line”)

References

"riail" in Foclóir Gaeilge-Béarla, An Gúm, 1977, by Niall Ó Dónaill.
“ríagal” in Dictionary of the Irish Language, Royal Irish Academy, 1913–76.

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