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To demonstrate in Irish (léirsigh): Meaning, Conjugation, Examples

Other uses of ‘léirsigh’: illustrate

The Irish for to demonstrate is léirsigh; ag léirsiú is demonstrating.
Updated October 2026Report a mistake

How to say “to demonstrate” in Irish

Irish:
léirsigh
English:
to demonstrate, illustrate
Word type:
verb, second-conjugation
Verbal noun:
léirsiú (ag léirsiú, demonstrating)
Verbal adjective:
léirsithe
Pronunciation:
“LAYR-shee”  /ˈl̠ʲeːɾʲʃɪ/

What does “léirsigh” mean?

“Léirsigh” has two alternative meanings. The most common comes first.

to demonstrate
To take part in a public protest or demonstration.Also: protest, march in protest.
1 other meaning: illustrate
2to illustrate
To make something clear by showing or explaining it, often with examples or pictures.Also: demonstrate, show, make clear.

Other Irish verbs for to demonstrate: léirigh (show), agóid (protest)

“Léirsigh” in the different tenses

Every form follows An Caighdeán Oifigiúil.

Aimsir Chaite (Past)

PersonPositiveNegativeQuestion
mé (I)Léirsigh méI demonstratedNíor léirsigh méI did not demonstrateAr léirsigh mé?Did I demonstrate?
tú (you)Léirsigh túYou demonstratedNíor léirsigh túYou did not demonstrateAr léirsigh tú?Did you demonstrate?
sé / sí (he / she)Léirsigh sé / síHe demonstratedNíor léirsigh sé / síHe did not demonstrateAr léirsigh sé / sí?Did he demonstrate?
sinn (we)LéirsíomarWe demonstratedNíor léirsíomarWe did not demonstrateAr léirsíomar?Did we demonstrate?
sibh (you, plural)Léirsigh sibhYou demonstratedNíor léirsigh sibhYou did not demonstrateAr léirsigh sibh?Did you demonstrate?
siad (they)Léirsigh siadThey demonstratedNíor léirsigh siadThey did not demonstrateAr léirsigh siad?Did they demonstrate?
saorbhriathar (autonomous)LéirsíodhNíor léirsíodhAr léirsíodh?

Aimsir Láithreach (Present)

PersonPositiveNegativeQuestion
mé (I)LéirsímI demonstrateNí léirsímI do not demonstrateAn léirsím?Do I demonstrate?
tú (you)Léirsíonn túYou demonstrateNí léirsíonn túYou do not demonstrateAn léirsíonn tú?Do you demonstrate?
sé / sí (he / she)Léirsíonn sé / síHe demonstratesNí léirsíonn sé / síHe does not demonstrateAn léirsíonn sé / sí?Does he demonstrate?
sinn (we)LéirsímidWe demonstrateNí léirsímidWe do not demonstrateAn léirsímid?Do we demonstrate?
sibh (you, plural)Léirsíonn sibhYou demonstrateNí léirsíonn sibhYou do not demonstrateAn léirsíonn sibh?Do you demonstrate?
siad (they)Léirsíonn siadThey demonstrateNí léirsíonn siadThey do not demonstrateAn léirsíonn siad?Do they demonstrate?
saorbhriathar (autonomous)LéirsítearNí léirsítearAn léirsítear?

Aimsir Fháistineach (Future)

PersonPositiveNegativeQuestion
mé (I)Léirseoidh méI will demonstrateNí léirseoidh méI will not demonstrateAn léirseoidh mé?Will I demonstrate?
tú (you)Léirseoidh túYou will demonstrateNí léirseoidh túYou will not demonstrateAn léirseoidh tú?Will you demonstrate?
sé / sí (he / she)Léirseoidh sé / síHe will demonstrateNí léirseoidh sé / síHe will not demonstrateAn léirseoidh sé / sí?Will he demonstrate?
sinn (we)LéirseoimidWe will demonstrateNí léirseoimidWe will not demonstrateAn léirseoimid?Will we demonstrate?
sibh (you, plural)Léirseoidh sibhYou will demonstrateNí léirseoidh sibhYou will not demonstrateAn léirseoidh sibh?Will you demonstrate?
siad (they)Léirseoidh siadThey will demonstrateNí léirseoidh siadThey will not demonstrateAn léirseoidh siad?Will they demonstrate?
saorbhriathar (autonomous)LéirseofarNí léirseofarAn léirseofar?

Modh Coinníollach (Conditional)

PersonPositiveNegativeQuestion
mé (I)LéirseoinnI would demonstrateNí léirseoinnI would not demonstrateAn léirseoinn?Would I demonstrate?
tú (you)LéirseofáYou would demonstrateNí léirseofáYou would not demonstrateAn léirseofá?Would you demonstrate?
sé / sí (he / she)Léirseodh sé / síHe would demonstrateNí léirseodh sé / síHe would not demonstrateAn léirseodh sé / sí?Would he demonstrate?
sinn (we)LéirseoimisWe would demonstrateNí léirseoimisWe would not demonstrateAn léirseoimis?Would we demonstrate?
sibh (you, plural)Léirseodh sibhYou would demonstrateNí léirseodh sibhYou would not demonstrateAn léirseodh sibh?Would you demonstrate?
siad (they)LéirseoidísThey would demonstrateNí léirseoidísThey would not demonstrateAn léirseoidís?Would they demonstrate?
saorbhriathar (autonomous)LéirseofaíNí léirseofaíAn léirseofaí?

“Léirsigh” in a sentence: Irish examples

Past, present, future and conditional, with a negative and a question.

Léirsigh na mic léinn os comhair na Dála inné.
The students demonstrated outside the Dáil yesterday.
Léirsíonn na hoibrithe gach Satharn ar son pá níos fearr.
The workers demonstrate every Saturday for better pay.
Léirseoidh na feirmeoirí i mBaile Átha Cliath amárach.
The farmers will demonstrate in Dublin tomorrow.
Léirseodh na múinteoirí dá ndúnfaí an scoil.
The teachers would demonstrate if the school were closed.
Níor léirsigh siad in aghaidh na cánach.
They did not demonstrate against the tax.
Ar léirsigh tú ar son na Gaeilge riamh?
Did you ever demonstrate for the Irish language?

Other verbs in Irish

More everyday Irish verbs to learn next.

To demonstrate in Irish: frequently asked questions

What is the Irish for to demonstrate?

The Irish for to demonstrate is léirsigh (pronounced “LAYR-shee”). It is a second-conjugation verb; the verbal noun is léirsiú.

What is the verbal noun of léirsigh?

The verbal noun of léirsigh is léirsiú, used after ag for the continuous: ag léirsiú (demonstrating). The verbal adjective is léirsithe.

How do you say léirsigh in the past and the future?

Past: Léirsigh mé; negative Níor léirsigh mé; question Ar léirsigh mé?. Future: Léirseoidh mé; negative Ní léirseoidh mé; question An léirseoidh mé?.

What is the modh coinníollach of léirsigh?

The conditional (modh coinníollach) first person is Léirseoinn (I would demonstrate); negative Ní léirseoinn; question An léirseoinn?.

Does léirsigh have more than one meaning?

Yes. Léirsigh can mean to demonstrate or to illustrate, depending on context; the first is the most common.

What is the difference between 'léirsigh' and 'léirigh'?

'Léirsigh' usually means to demonstrate in protest, while 'léirigh' means to show, portray or produce (a play). A protest march is 'léirsiú', but a theatre production is 'léiriú'.

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