English nouns with unknown or uncertain plurals.

Terms are usually added to this category by specifying? as the plural. As much is possible, a plural should be added or, if the noun is uncountable, indicated appropriately (usually using- in place of the plural). Some languages support the value! to indicate that a plural cannot be attested but the noun is theoretically countable.

• English nouns
• English entry maintenance
• Nouns with unknown or uncertain plurals by language

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