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Insecticide in Irish (Feithidnimh): Meaning, Pronunciation, Usage

The Irish for insecticide is feithidnimh, a feminine noun (plural feithidnimheanna).
Updated October 2026Report a mistake

How to say “insecticide” in Irish

Irish:
feithidnimh
English:
insecticide
Word type:
noun
Gender:
feminine
Pronunciation:
“FEH-hid-niv”  /ˈfʲehɪdʲnʲɪvʲ/
Various forms
Plural:
feithidnimheanna (insecticides)
Genitive singular:
feithidnimhe, na feithidnimhe (e.g. buidéal feithidnimhe, a bottle of insecticide)
Genitive plural:
feithidnimheanna, na bhfeithidnimheanna (e.g. úsáid na bhfeithidnimheanna, the use of the insecticides)

What does “feithidnimh” mean?

insecticide
A chemical substance used to kill insects.Also: insect poison, pesticide, bug spray.

“Feithidnimh” with the article

The plural of insecticide in Irish is feithidnimheanna. Here is feithidnimh after the article (an t-alt), in the singular and the plural.

an fheithidnimh
the insecticide
Lenition: f becomes fh after an (feminine noun)
na feithidnimheanna
the insecticides
Plural: no change after na

“Feithidnimh” in a sentence: Irish examples

Common Irish sentences using feithidnimh, the Irish word for insecticide.

Chuir an feirmeoir feithidnimh ar na barra.
The farmer put insecticide on the crops.
Tá an fheithidnimh sin an-dainséarach do bheacha.
That insecticide is very dangerous to bees.
Cheannaigh mé buidéal feithidnimhe sa siopa.
I bought a bottle of insecticide in the shop.
Cuireadh cosc ar roinnt feithidnimheanna san Eoraip.
Some insecticides were banned in Europe.
Chuir mé m'fheithidnimh i bhfolach ó na páistí.
I hid my insecticide from the children.
Bhí boladh láidir san aer i ndiaidh na feithidnimhe.
There was a strong smell in the air after the insecticide.
Ná húsáid feithidnimh in aice le huisce.
Don't use insecticide near water.

Other nouns in Irish

More everyday Irish nouns to learn next.

Insecticide in Irish: frequently asked questions

What is the Irish for insecticide?

The Irish for insecticide is feithidnimh (pronounced “FEH-hid-niv”). It’s a feminine noun and the plural is feithidnimheanna.

How do you pronounce feithidnimh in Irish?

Feithidnimh is said like “FEH-hid-niv” (IPA /ˈfʲehɪdʲnʲɪvʲ/).

What is the plural of insecticide in Irish?

The plural of feithidnimh is feithidnimheanna; with the article, na feithidnimheanna means “the insecticides”. The genitive plural is feithidnimheanna, as in úsáid na bhfeithidnimheanna (the use of the insecticides).

Why does feithidnimh change to fheithidnimh or bhfeithidnimh?

Irish changes the start of some words after certain words. After mo (my) feithidnimh becomes m'fheithidnimh (lenition), and after ár (our) or i (in) it becomes ár bhfeithidnimh (eclipsis).

How is 'feithidnimh' formed?

It combines 'feithid' (insect) and 'nimh' (poison), so it literally means insect poison. A more general word for pesticide is 'lotnaidicíd'.

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