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Starting in Irish (Tosú): Meaning, Pronunciation, Usage

The Irish for starting is tosú, a masculine noun. Ag tosú is beginning, from the verb tosaigh.
Updated October 2026Report a mistake

How to say “starting” in Irish

Irish:
tosú
English:
starting
Word type:
noun (verbal noun)
Verbal noun of:
tosaigh, to begin (ag tosú, beginning)
Gender:
masculine
Pronunciation:
“tuh-SOO”  /t̪ˠəˈsˠuː/
Various forms
Genitive singular:
tosaithe, an tosaithe (e.g. am tosaithe an chluiche, the starting time of the game)

What does “tosú” mean?

starting
The act of beginning something; it is the verbal noun of the verb tosaigh (begin, start).Also: beginning, start, commencement, commencing.

“Tosú” as a verbal noun

After ag, tosú means beginning: it is the verbal noun of the verb tosaigh (to begin). A noun that follows it goes into the genitive.

agat
+
tosúverbal noun
=
ag tosúbeginning

“Tosú” with the article

Here is tosú after the article (an t-alt).

an tosú
the starting
No change after an

“Tosú” in a sentence: Irish examples

Common Irish sentences using tosú, the Irish word for starting.

Tá sé in am tosú anois.
It's time to start now.
Beidh an rang ag tosú ar a naoi.
The class will be starting at nine.
Cén t-am tosaithe atá ag an gceolchoirm?
What's the start time for the concert?
Ní raibh an tosú éasca dúinn.
Starting wasn't easy for us.
Táim ag iarraidh tosú ar an obair.
I'm trying to get started on the work.
Bhí moill ar thosú an chruinnithe.
The start of the meeting was delayed.
Is fearr tosú go luath ar maidin.
It's better to start early in the morning.

Other nouns in Irish

More everyday Irish nouns to learn next.

Starting in Irish: frequently asked questions

What is the Irish for starting?

The Irish for starting is tosú (pronounced “tuh-SOO”). It’s a masculine noun.

How do you pronounce tosú in Irish?

Tosú is said like “tuh-SOO” (IPA /t̪ˠəˈsˠuː/).

Does tosú have a plural?

No plural form is given for tosú in the standard. Many abstract and mass nouns in Irish have no plural.

Why does tosú change to thosú or dtosú?

Irish changes the start of some words after certain words. After mo (my) tosú becomes mo thosú (lenition), and after ár (our) or i (in) it becomes ár dtosú (eclipsis).

What is the difference between tosú and tús?

Tosú is the verbal noun, the act of starting (ag tosú, starting), while tús is the beginning itself (tús an scéil, the beginning of the story).

Which preposition follows tosú?

Use ar for starting a task: tosú ar an obair, to start the work. Use ag with a verbal noun: thosaigh sé ag caoineadh, he started crying.

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