Neuter noun gender

In Czech, every noun has a gender. You can usually identify a neuter noun by its ending in the dictionary form (nominative singular). There are several main groups, including the four official paradigms (models or vzory) used to decline neuter nouns: město, moře, kuře, and stavení:

• -o: The most common ending for hard stems, following the paradigm město (town) (e.g., auto - car, pivo - beer). Note that the words oko (eye) and ucho (ear) are irregular: they become feminine in the plural (oči, uši) when referring to body parts, and take special historical 'dual' endings in certain cases, such as the instrumental plural: očima (with eyes) and ušima (with ears). When referring to inanimate objects (like handles of a mug or fat drops on soup), they remain neuter and decline regularly.
• -e / -ě: Used for soft stems, following the paradigm moře (sea) (e.g., vejce - egg).
• -e / -ě (expanding stems): While famously used for young animals and humans (e.g., dítě - child), this group also includes general animals (e.g., zvíře - animal, prase - pig) and some inanimate objects (e.g., rajče - tomato, koště - broom). They follow the paradigm kuře (chicken). These are special because they add -et- to their stem in other cases (like bez kuřete - without a chicken, or bez zvířete - without an animal) and take -ata in the plural (e.g., zvířata - animals). Note that the spelling changes from tě/ně to ťa/ňa in the plural (e.g., koště becomes košťata, štěně becomes štěňata) due to standard Czech orthographic rules for writing soft consonants before the -ata ending. Note that dítě is highly irregular and becomes a feminine noun in the plural (děti), with a special instrumental plural form dětmi (with children).
• -í: Often used for places, collections, and crucially, verbal nouns ending in -ní and -tí (e.g., plavání - swimming, pití - drinking, parkování - parking). They follow the paradigm stavení (building) (e.g., nádraží - train station).
• Adjectival Nouns (-é / -í): Some neuter nouns are actually adjectives functioning as nouns (e.g., vstupné - admission fee, vepřové - pork, kuřecí - chicken meat). Instead of standard noun paradigms, they decline like adjectives (following the patterns for mladé or jarní).
• -um: Foreign borrowings (e.g., centrum - center, muzeum - museum, datum - date). The -um is dropped when adding endings for other cases (like do centra - to the center), and they take an -a in the plural (e.g., centra, muzea).
• -ma: Greek borrowings (e.g., téma - theme, drama - drama, klima - climate). Learners often mistake these for feminine nouns because they end in -a, but they are actually neuter and add an -at- infix in other cases (like bez tématu - without a theme), and take -ata in the plural (e.g., témata, dramata).
• Indeclinable foreign words: Some foreign borrowings ending in vowels like -i, -é, or -ú (e.g., kivi - kiwi, klišé - cliché, ragú - ragout) are neuter and indeclinable (they never change their endings).

Crucial Rule: Unlike feminine nouns ending in -a, neuter nouns do not change when they become the direct object of a sentence. The neuter accusative is identical to the nominative.

Common Misconceptions:
1. Neuter is not just for inanimate objects! Young living beings (like puppies or babies) are neuter.
2. You cannot always guess the gender just by looking at the last letter. While -o is almost always neuter, the endings -e and -ě are shared with masculine and feminine nouns, so you must memorize the gender of these specific words. Inanimate nouns ending in -í, however, are overwhelmingly neuter; only words for people (like paní or krejčí) are feminine or masculine.