I really don't understand your question. You are asking for a plural noun that behaves like a singular word? That is a contradiction in terms.
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CalifJimA series of questions like that is difficult to answer.
(I'm not sure if that's what you are looking for.)
CJ
Yes I mean a word like that.
But is series a plural noun (or a plural noun which is collective and should be used as a singular like the most of collective nouns(if there is such a word which is my first questio
A large group of Japanese tourists is checking in this morning.
A bunch of packages was stolen from the UPS delivery truck.