{
 "source": "https://peabody.kids/flashcards/la-plurals-irregular",
 "id": "la-plurals-irregular",
 "title": "Irregular Plurals",
 "category": "language-arts",
 "subject": "English",
 "levels": [
  "k-2",
  "3-5"
 ],
 "description": "Nouns that do not just add -s to become plural.",
 "tags": [
  "plurals",
  "spelling",
  "nouns"
 ],
 "frontLabel": "Singular",
 "backLabel": "Plural",
 "cards": [
  [
   "child",
   "children"
  ],
  [
   "man",
   "men"
  ],
  [
   "woman",
   "women"
  ],
  [
   "person",
   "people"
  ],
  [
   "foot",
   "feet"
  ],
  [
   "tooth",
   "teeth"
  ],
  [
   "goose",
   "geese"
  ],
  [
   "mouse",
   "mice"
  ],
  [
   "louse",
   "lice"
  ],
  [
   "ox",
   "oxen"
  ],
  [
   "sheep",
   "sheep"
  ],
  [
   "deer",
   "deer"
  ],
  [
   "fish",
   "fish (or fishes for kinds of fish)"
  ],
  [
   "moose",
   "moose"
  ],
  [
   "series",
   "series"
  ],
  [
   "species",
   "species"
  ],
  [
   "aircraft",
   "aircraft"
  ],
  [
   "bison",
   "bison"
  ],
  [
   "salmon",
   "salmon"
  ],
  [
   "trout",
   "trout"
  ],
  [
   "shrimp",
   "shrimp (or shrimps)"
  ],
  [
   "leaf",
   "leaves"
  ],
  [
   "knife",
   "knives"
  ],
  [
   "life",
   "lives"
  ],
  [
   "wife",
   "wives"
  ],
  [
   "wolf",
   "wolves"
  ],
  [
   "elf",
   "elves"
  ],
  [
   "shelf",
   "shelves"
  ],
  [
   "half",
   "halves"
  ],
  [
   "calf",
   "calves"
  ],
  [
   "loaf",
   "loaves"
  ],
  [
   "thief",
   "thieves"
  ],
  [
   "self",
   "selves"
  ],
  [
   "scarf",
   "scarves"
  ],
  [
   "hoof",
   "hooves"
  ],
  [
   "dwarf",
   "dwarfs or dwarves"
  ],
  [
   "roof",
   "roofs"
  ],
  [
   "chief",
   "chiefs"
  ],
  [
   "cliff",
   "cliffs"
  ],
  [
   "belief",
   "beliefs"
  ],
  [
   "proof",
   "proofs"
  ],
  [
   "bus",
   "buses"
  ],
  [
   "box",
   "boxes"
  ],
  [
   "glass",
   "glasses"
  ],
  [
   "dish",
   "dishes"
  ],
  [
   "church",
   "churches"
  ],
  [
   "fox",
   "foxes"
  ],
  [
   "watch",
   "watches"
  ],
  [
   "brush",
   "brushes"
  ],
  [
   "class",
   "classes"
  ],
  [
   "tomato",
   "tomatoes"
  ],
  [
   "potato",
   "potatoes"
  ],
  [
   "hero",
   "heroes"
  ],
  [
   "echo",
   "echoes"
  ],
  [
   "veto",
   "vetoes"
  ],
  [
   "photo",
   "photos"
  ],
  [
   "piano",
   "pianos"
  ],
  [
   "radio",
   "radios"
  ],
  [
   "zoo",
   "zoos"
  ],
  [
   "kangaroo",
   "kangaroos"
  ],
  [
   "studio",
   "studios"
  ],
  [
   "video",
   "videos"
  ],
  [
   "solo",
   "solos"
  ],
  [
   "city",
   "cities"
  ],
  [
   "baby",
   "babies"
  ],
  [
   "puppy",
   "puppies"
  ],
  [
   "fly",
   "flies"
  ],
  [
   "berry",
   "berries"
  ],
  [
   "story",
   "stories"
  ],
  [
   "lady",
   "ladies"
  ],
  [
   "party",
   "parties"
  ],
  [
   "country",
   "countries"
  ],
  [
   "family",
   "families"
  ],
  [
   "key",
   "keys"
  ],
  [
   "monkey",
   "monkeys"
  ],
  [
   "day",
   "days"
  ],
  [
   "boy",
   "boys"
  ],
  [
   "toy",
   "toys"
  ],
  [
   "valley",
   "valleys"
  ],
  [
   "cactus",
   "cacti or cactuses"
  ],
  [
   "fungus",
   "fungi"
  ],
  [
   "nucleus",
   "nuclei"
  ],
  [
   "radius",
   "radii"
  ],
  [
   "stimulus",
   "stimuli"
  ],
  [
   "alumnus",
   "alumni"
  ],
  [
   "syllabus",
   "syllabi or syllabuses"
  ],
  [
   "focus",
   "foci or focuses"
  ],
  [
   "octopus",
   "octopuses"
  ],
  [
   "crisis",
   "crises"
  ],
  [
   "analysis",
   "analyses"
  ],
  [
   "thesis",
   "theses"
  ],
  [
   "hypothesis",
   "hypotheses"
  ],
  [
   "diagnosis",
   "diagnoses"
  ],
  [
   "oasis",
   "oases"
  ],
  [
   "parenthesis",
   "parentheses"
  ],
  [
   "axis",
   "axes"
  ],
  [
   "bacterium",
   "bacteria"
  ],
  [
   "datum",
   "data"
  ],
  [
   "medium",
   "media"
  ],
  [
   "curriculum",
   "curricula"
  ],
  [
   "memorandum",
   "memoranda"
  ],
  [
   "phenomenon",
   "phenomena"
  ],
  [
   "criterion",
   "criteria"
  ],
  [
   "appendix",
   "appendices or appendixes"
  ],
  [
   "index",
   "indices or indexes"
  ],
  [
   "vertex",
   "vertices"
  ],
  [
   "matrix",
   "matrices"
  ],
  [
   "formula",
   "formulas or formulae"
  ],
  [
   "antenna",
   "antennae or antennas"
  ],
  [
   "alga",
   "algae"
  ],
  [
   "larva",
   "larvae"
  ],
  [
   "vertebra",
   "vertebrae"
  ],
  [
   "passerby",
   "passersby"
  ],
  [
   "mother-in-law",
   "mothers-in-law"
  ],
  [
   "brother-in-law",
   "brothers-in-law"
  ]
 ]
}