Ilariia
From the Greek for "cheerful, joyful." The name only surfaces in Polish records in the 2020s, and stays rare enough that most Poles have never met an Ilariia. Always a girl.
Ilariia Pronunciation
Ilariia is pronounced ee-LAHRY-yah (/iˈlarjja/).
What Ilariia means
Where Ilariia comes from and what it has meant to the people who carry it.
Ilariia begins in Greek, in the word hilaros, meaning cheerful or glad. From it Latin took hilaris, and the names Hilarius for men and Hilaria for women. The double vowel in Ilariia points to a Slavic transliteration, the shape the Cyrillic Иларія takes when it crosses into the Latin alphabet.
The Romans kept a spring festival called the Hilaria, days of relief that followed days of mourning. An early Christian martyr named Hilaria later carried the word into the calendars of saints. The sense stayed constant across these forms: someone bright, someone glad.
The meaning is plain. Ilariia says cheerful, joyful.
On a Polish class register the name stands out among the Zuzannas and Julias. It reads as foreign and old at the same time. A teacher might pause at the second i before reading it aloud. The name asks for that small attention, and gives back a clear meaning in return: joy, spelled in an unusual hand.
How many people are named Ilariia
1 in 165763 women in Poland is named Ilariia. 136 people carry it in the 2025 register: rank #2833 among female names.
Ilariia's popularity over time
4 girls were given the name in 2025, ranking #1058 among newborns. It has been climbing since 2020.
Where Ilariia is most popular
Ilariia is most popular in Lower Silesian, 588% above the national average (2 girls born 2019–2025), followed by Masovian (+205%).
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Lower Silesian2 girls born+588%
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Masovian2 girls born+205%