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“Fúthu” in Irish (under them, about them): Meaning and Where It Comes From

Fúthu means under them, about them. It is the preposition faoi (under) and the pronoun siad (them) joined into one word. Irish does this with every simple preposition; the joined words are called prepositional pronouns, forainmneacha réamhfhoclacha.
Updated October 2026Report a mistake

Where “fúthu” comes from

Take the preposition, add the pronoun, and they fuse into one word. You never say “faoi siad” in Irish.

faoiunder +
siadthem
=
fúthuunder them, about them

Under, and also about: tá an cat fúm = the cat is under me, labhair sé fúm = he spoke about me, bhíomar ag caint fút = we were talking about you.

“Fúthu” in the table of “faoi”

Every form of faoi with a pronoun. Fúthu is the last (they, them) row. Click any form to see its own page.

PronounIrishMeaningExample
mé (me)fúmunder me, about meBhí siad ag gáire fúm.They were laughing at me.
tú (you)fútunder you, about youTá sé fút féin.It's up to you.
sé (him / it)faoiunder him / it, about him / itChuala mé scéal faoi inné.I heard a story about him yesterday.
sí (her / it)fúithiunder her / it, about her / itBhí siad ag caint fúithi.They were talking about her.
sinn (us)fúinnunder us, about usNá bí ag magadh fúinn.Don't be making fun of us.
sibh (you (plural))fúibhunder you (plural), about you (plural)Inis dom fúibh féin.Tell me about yourselves.
siad (them)fúthuunder them, about themNíl mórán ar eolas agam fúthu.I don't know much about them.

“Fúthu” in sentences

Níl mórán ar eolas agam fúthu.
I don't know much about them.

“siad” with the other prepositions

The same pronoun, siad (them), joined to the other prepositions.

“Fúthu” in Irish: frequently asked questions

What does fúthu mean in Irish?

fúthu means under them, about them: the preposition faoi (under) joined to the pronoun siad (them). The next form is fúm, under me, about me.

Is fúthu one word or two?

One word. A simple preposition and a pronoun always fuse in Irish, so you never say “faoi siad”. These fused words are prepositional pronouns, forainmneacha réamhfhoclacha.

What are all the forms of faoi with pronouns?

fúm (under me, about me), fút (under you, about you), faoi (under him / it, about him / it), fúithi (under her / it, about her / it), fúinn (under us, about us), fúibh (under you (plural), about you (plural)), fúthu (under them, about them).

When do I use fúthu?

Under, and also about: tá an cat fúm = the cat is under me, labhair sé fúm = he spoke about me, bhíomar ag caint fút = we were talking about you. For example: Níl mórán ar eolas agam fúthu., I don't know much about them.

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