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Irregular Plural Nouns Flashcards — 114 Words

Master 114 English nouns with irregular plurals. Most nouns add -s or -es; these don't (child → children, foot → feet, mouse → mice, person → people). Most are very common, so memorising the irregular form pays off fast. Each card shows the singular and irregular plural side-by-side.

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Why Irregular Plurals Trip Up Learners

Most English nouns add -s or -es to form the plural. A small set of high-frequency nouns break the rule: child → children, man → men, woman → women, foot → feet, tooth → teeth, mouse → mice, person → people, goose → geese. Because these are common words, getting the plural wrong is immediately noticeable.

Patterns Behind Irregular Plurals

Most irregular plurals fall into a few patterns: vowel change (man → men, foot → feet), -en endings (child → children, ox → oxen), unchanged (sheep → sheep, deer → deer), or borrowed Latin/Greek forms (cactus → cacti, criterion → criteria). Studying by pattern is faster than memorising case-by-case.

First 20 entries in this collection

child /tʃaɪld/ A young boy or girl who is not yet an adult. feet /fiːt/ the two parts at the bottom of your legs that touch the ground when you stand or walk fly /flaɪ/ A tiny insect that lives around food and moves very fast. man /mæn/ A grown-up male person. A man is an adult male, not a boy or woman. memory /ˈmɛməri/ The ability to remember things from the past, or the thought you have when you remember something. person /ˈpɜːrsən/ One human; a single individual. salary /ˈsæləri/ Money that a person earns from their job, paid regularly by their employer. this /ðɪs/ A thing or person that is close to you right now. wife /waɪf/ a married woman, especially in relation to her husband woman /ˈwʊm.ən/ a grown-up female person, as opposed to a girl ally /ˈæl.aɪ/ Someone who helps you or works together with you. basis /ˈbeɪsɪs/ The main reason, principle, or foundation that something is built or decided on. body /ˈbɑːdi/ A group of people joined together for a specific goal or function. body /ˈbɑːdi/ the whole physical form of a person or animal, including head, arms, legs, and torso body /ˈbɑːdi/ the principal or largest section of something, not including parts attached to it foot /fʊt/ The part of your leg that touches the ground when you walk. foot /fʊt/ A measurement used mainly in the US and UK, roughly the length of an adult foot. foot /fʊt/ The bottom end or base of anything tall or vertical. hero /ˈhɪroʊ/ Someone who does something very brave or kind that helps other people, often at great risk. knife /naɪf/ A sharp tool with a handle that you use for cutting things like food or other materials.

FAQ

How is this collection assembled?

Cards are selected by a metadata query against the dictionary — for example, "irregular-verbs" pulls every entry where the verb_conjugation field has is_irregular = true. The deck stays current automatically as new dictionary entries publish.

Should I study this before or after CEFR levels?

Use collections as a focused supplement, not a replacement. Build your CEFR foundation first, then drill collections to plug gaps. The "Irregular Verbs" collection in particular is worth doing in parallel with A1 and A2 — most irregulars are top-1k words.

Why are some entries missing?

The dictionary publishes entries in tiered batches. Specialist or rare entries may not have been added yet. Check back as new batches publish.

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