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Rider in Irish (Fo-fhadhb): Meaning, Pronunciation, Usage

The Irish for rider is fo-fhadhb, a feminine noun (plural fo-fhadhbanna).
Updated October 2026Report a mistake

How to say “rider” in Irish

Irish:
fo-fhadhb
English:
rider
Word type:
noun
Gender:
feminine
Pronunciation:
“FO-ayb”  /ˈfoˌaibˠ/
Various forms
Plural:
fo-fhadhbanna (riders)
Genitive singular:
fo-fhaidhbe, na fo-fhaidhbe (e.g. réiteach na fo-fhaidhbe, the solution to the rider)
Genitive plural:
fo-fhadhbanna, na bhfo-fhadhbanna (e.g. réiteach na bhfo-fhadhbanna, the solutions to the riders)

What does “fo-fhadhb” mean?

rider
A secondary problem or exercise that follows from a main problem or theorem, especially in geometry.Also: subproblem, secondary problem, corollary exercise.

Other Irish words for rider: marcach (rider)

“Fo-fhadhb” with the article

The plural of rider in Irish is fo-fhadhbanna. Here is fo-fhadhb after the article (an t-alt), in the singular and the plural.

an fho-fhadhb
the rider
Lenition: f becomes fh after an (feminine noun)
na fo-fhadhbanna
the riders
Plural: no change after na

“Fo-fhadhb” in a sentence: Irish examples

Common Irish sentences using fo-fhadhb, the Irish word for rider.

Tá fo-fhadhb ag deireadh na ceiste.
There is a rider at the end of the question.
Réitigh an fho-fhadhb sa dara cuid.
Solve the rider in the second part.
Ní raibh am agam don fho-fhadhb.
I didn't have time for the rider.
Bhí réiteach na fo-fhaidhbe deacair.
The solution of the rider was difficult.
Tá trí fho-fhadhb sa leabhar seo.
There are three riders in this book.
Bhí na fo-fhadhbanna geoiméadrachta crua i mbliana.
The geometry riders were hard this year.
Rinne mé botún i m'fho-fhadhb.
I made a mistake in my rider.

Other nouns in Irish

More everyday Irish nouns to learn next.

Rider in Irish: frequently asked questions

What is the Irish for rider?

The Irish for rider is fo-fhadhb (pronounced “FO-ayb”). It’s a feminine noun and the plural is fo-fhadhbanna.

How do you pronounce fo-fhadhb in Irish?

Fo-fhadhb is said like “FO-ayb” (IPA /ˈfoˌaibˠ/).

What is the plural of rider in Irish?

The plural of fo-fhadhb is fo-fhadhbanna; with the article, na fo-fhadhbanna means “the riders”. The genitive plural is fo-fhadhbanna, as in réiteach na bhfo-fhadhbanna (the solutions to the riders).

Why does fo-fhadhb change to fho-fhadhb or bhfo-fhadhb?

Irish changes the start of some words after certain words. After mo (my) fo-fhadhb becomes m'fho-fhadhb (lenition), and after ár (our) or i (in) it becomes ár bhfo-fhadhb (eclipsis).

How is 'fo-fhadhb' related to 'fadhb'?

It is 'fadhb' (problem) with the prefix 'fo-' meaning sub or secondary, so 'fo-fhadhb' is a subsidiary problem, as in a geometry rider.

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