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Definition 2025

arb

arb

See also: ARB and Arb.

English

Noun

arb ‎(plural arbs)

(finance, trading) One who engages in arbitrage, an arbitrageur.
(informal) An arboretum.
- 2005, Adam Zang, Jendrey Julie, Chris Mason, Carleton College
  Just don't be too scared when you hear rumors of sacrificial ceremonies in the Arb […]

Irish

Alternative forms

ar (used before consonant sounds)
ar b’ (superseded)

Particle

arb ‎(copular form used before vowel sounds)

Introduces an indirect relative clause; present/future tense
an fear arb iascaire a mhac‎ ― the man whose son is a fisherman

Related terms

Irish copular forms

Simple copular forms

Present/future
	Affirmative	Negative	Interrogative	Neg. inter.
Main clauses	is	ní	an	nach
Direct relative clauses	is	nach
Indirect relative clauses	ar, arb^v
Other subordinate clauses	gur, gurb^v		an	nach
Past/conditional
	Affirmative	Negative	Interrogative	Neg. inter.
Main clauses	ba, b’^v	níor, níorbh^v	ar, arbh^v	nár, nárbh^v
Direct relative clauses	ba, ab^v	nár, nárbh^v
Indirect relative clauses	ar, arbh^v
Other subordinate clauses	gur, gurbh^v		ar, arbh^v	nár, nárbh^v
Present subjunctive
	Affirmative	Negative
	gura, gurab^v	nára, nárab^v

Compound copular forms

Base word	Present/future	Past/conditional
má	más	má ba, má b’^v
ó ‎(“since”)	ós	ó ba, ó b’^v
dá		dá mba, dá mb’^v
mura	mura, murab^v	murar, murarbh^v
cé	cér, cérb^v	cér, cérbh^v
cá	cár, cárb^v	cár, cárbh^v
de/do	dar, darb^v	dar, darbh^v
faoi	faoinar, faoinarb^v	faoinar, faoinarbh^v
i	inar, inarb^v	inar, inarbh^v
le	lenar, lenarb^v	lenar, lenarbh^v
ó ‎(“from”)	ónar, ónarb^v	ónar, ónarbh^v
trí	trínar, trínarb^v	trínar, trínarbh^v

Note: Forms marked ^v are used before a vowel sound.

References

"arb" in Foclóir Gaeilge-Béarla, An Gúm, 1977, by Niall Ó Dónaill.

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