373 entries with a sense WordNet labels plural. Register matters more than meaning when you are choosing between two words that mean the same thing. Membership is WordNet's own register label: every entry here has at least one sense marked "plural".
Commonest, longest and average syllables are measured across the 373 words carried on this page, ordered by how often each appears in everyday English.
Definitions, subject classification and semantic relations come from WordNet. Syllable counts come from the CMU Pronouncing Dictionary where the word is recorded in it. Full sources and licences.