Neuter noun gender

To identify a neuter noun, look at its ending in the nominative case:

• -о: The most common ending for both physical objects (вікно - window, місто - city) and abstract concepts (добро - goodness, зло - evil).
• -е: Used after soft or 'hushing' consonants (e.g., море - sea, серце - heart).
• -я: Found in abstract nouns with doubled consonants (життя - life) and collective nouns (волосся - hair). Note: While doubled consonants before -я are very common in neuter nouns, be aware that some feminine nouns like стаття (article) or рілля (plowed land) also follow this pattern. The word щастя (happiness) also ends in -я but does not feature doubling.
• -а / -я: Used for baby animals and certain other nouns (part of the 4th declension). The ending -а follows a 'hushing' consonant (курча - chick, лоша - foal), while -я follows other consonants (кошеня - kitten, теля - calf). The word дівча (girl) also follows this pattern, though it is primarily used in folk or poetic contexts (дівчина is the standard word).
• -м'я: A small group of nouns ends in -м'я, most notably ім'я (name).

Substantivized Adjectives
Some neuter nouns function like adjectives and follow adjective agreement patterns, such as минуле (the past) and майбутнє (the future).

The Apostrophe
Some neuter nouns ending in -я feature an apostrophe, such as здоров'я (health), подвір'я (courtyard), and пір'я (feathers). However, the apostrophe is not unique to neuter nouns; it also appears in feminine nouns like сім'я (family) and masculine names like Дем'ян.

Note on stem expansion: Nouns ending in -а/-я (like baby animals) expand their stems by adding -ат-/-ят- in the Genitive, Dative, and Locative singular (e.g., кошеняти, кошеняті). Crucially, these nouns expand their stems in all cases of the plural (e.g., кошенята, кошенят). In the accusative, the singular form remains unchanged (кошеня). In the plural, the form depends on animacy: animate nouns (like кошенят) match the Genitive plural, while inanimate nouns (like коліщат - small wheels) match the Nominative plural. Nouns ending in -м'я, like ім'я (name), expand their stems with -ен- in the Genitive, Dative, and Locative singular (e.g., імені), and throughout the plural. Unlike the baby animal group, nouns in -м'я also expand their stem in the Instrumental singular (e.g., іменем).

Plural Endings: In the plural, most neuter nouns change their endings to -а (after hard consonants, e.g., вікна) or -я (after soft or hushing consonants, e.g., моря, знання).

Important Disclaimer: The endings -а and -я are most commonly feminine endings, though they are also used for some masculine nouns (like Микола, суддя) and common gender nouns (like сирота, колега).

Agreement: When you use a neuter noun, the adjective gender must also be neuter (usually ending in -е or -є), and the past tense verb must end in -ло (or -лося/-лось for reflexive verbs, e.g., сталося).

Loanwords: Inanimate foreign words ending in vowels like метро (metro), таксі (taxi), меню (menu), or рагу (stew) are usually neuter and indeclinable. However, some take the gender of their underlying generic concept (e.g., авеню is feminine because вулиця is feminine). Also note that пальто (coat) and ситро (lemonade) are notable exceptions because, unlike most foreign words ending in -о, they are declinable. Animate loanwords like аташе (attaché) or леді (lady) follow natural gender instead of being neuter.