Is an envelope masculine or feminine?

What clothes do pedi people wear? Is mustn't verb? What do people think about slang? What is proper social behavior? What is the proper salutation for Mr and Mrs Smith when Mr Smith is the judge? How you finish the letter with a goodwill statement? What is the adverb for 'scorn'? What is meant by saying dont let the cat out of the bag? What does it mean when there is a sock on a doorknob? What did Lucille Mulhall wear? What does the name mateen mean? Is cutlery countable noun? Colón writes that he buried his courtesy that morning what does he mean? What is the meaning of 'a word to the wise is enough'? What do you do if a boy is being rude to you? What is the abstract noun for the adjective rude? What does it mean when someone says come on now spit spot? Why do people do what they see others doing? What is the English translation for etes-vous les gars va pas mieux? What is the meaning of the idiom where there's a will there's a way?