Other contributors have said "What are the List of plural nouns that don't end in s?" is the same question as "A list of plural nouns that do not end in s?" If you believe that these are not asking the same thing and should be answered differently, click here
Cow -> CowsPhone -> phonesPretty much everything that does not end in s already.Octopus -> Octopidrop the last vowel of the last sylable, replace with 'i'.
In the English language, adjectives do not change their form when used with a plural noun. They will end with an 's' before a plural noun only if they end with an 's' before a singular noun.A large...