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Poll: What's the plural of 'hippopotamus'?

What's the plural of 'hippopotamus'?

Hippopotami
Hippopotamuses
Either can be used.

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This Poll:

  • Votes: 1,201
  • Comments: 8
  • Added: July 2013

Comments:

Magdalena Zajac

Both can be used, see http://oxforddictionaries.com/defini
tion/english/hippopotamus?q=hippopot
amus

sugirtha

Many words that end with 'us' (Like Alumnus) has the plural form with 'i' (Alumni). So it is right to call HIPPOPOTAMI.

vikram raikwar

it's true

Nwachukwu Christopher

Hippopotami

tristano

Actually, it's a Latin noun, to be more precise it's a second declension nominative singular. And the plural is obtained removing the -us and adding -i.
However given that it's in the language currently used (see Magdalena comment), you could build the plural following the English grammar rules as well, thus "hippopotamuses".

saxbend

It's not Latin. It's Greek. Though it is second declension and it's not uncommon for English to use Latin second declension rules for Greek 2nd declension nouns and this is ok for Hippopotamus. You have to be careful with other words like Octopus though as pous is a third declension noun.so the plural would end in podes. Other examples of us not being latin 2nd declension nouns are genus (genera) and opus (opera), both 3rd declension neuter nouns.

Steve Andrews

The plural of hippopotamus really cannot be hippopotamuses and certainly not hippopotami. Surely it must be hippoepotamus, because it is the horse that is plural, not the river!

Gloria

I always thought the plural was also hippopotamus, like sheep; one sheep, two sheep, one hippopotomus, two hippopotamus...

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