What is the plurals for address?
addresses - Simple English Wiktionary.
What is polite plural?
politeness (usually uncountable, plural politenesses) The quality of being polite. An act of politeness.
What are plural adjectives?
Adjectives don't have a singular and plural form OR a masculine, feminine and neutral form. Adjectives are always the same! Never add a final –s to an adjective. Adjectives can also be placed at the end of a sentence if they describe the subject of a sentence.