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14 votes
5 answers
19k views

Is there a good rule of thumb for plurals of words ending in "o"?

The following words and their plurals seem to be somewhat inconsistent: combo / combos concerto / concertos grotto / grottos / grottoes (?) hero / heros (?) / heroes potato / potatos (?) / potatoes ...
MrHen's user avatar
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12 votes
2 answers
19k views

When should a singular word ending in "y" end in "ies" plurally?

Words like "sky" and "money" have "ies" as a plural suffix (i.e. "skies" and "monies") but other words like "monkey" and "Emmy" do not ("monkeys" and "Emmys"). Is there a rule dictating the use of "...
soutarm's user avatar
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