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Irregular Plural Nouns

  •  English    50     Featured
    Most plurals are formed by adding 's' or 'es', but not these ones. How many do you know? (Upper Intermediate ESL)
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  • matrix
    matrices
  •  20
  • index
    indeces
  •  20
  • bacterium
    bacteria
  •  25
  • phenomenon
    phenomena
  •  25
  • deer
    deer
  •  15
  • offspring
    offspring
  •  15
  • series
    series
  •  15
  • species
    species
  •  15
  • vertebra
    vertebrae
  •  20
  • formula
    formulae
  •  20
  • antenna
    antennae
  •  20
  • louse
    lice
  •  20
  • nucleus
    nuclei
  •  20
  • die
    dice
  •  15
  • salmon
    salmon
  •  10
  • moose
    moose
  •  15