What is the origin of the phrase forget about it?

What clothes do traditional French wear? What are characteristics of an acquaintance? When someone says en garde in French what do you say in French? What is the meaning of phrase at the eleventh hour? What does this quote mean Do not worry about holding high position worry rather about playing your proper role? How do you address a letter to a man and his wife? What is the meant by largesse? What are some differences between a formal workplace and a informal workplace? Is buttmunch a bad word? How To write a adieu letter after getting transfer within the company to thank your colleagues? What to wear to a party? What is another word for using cordially? What are the Heian Courtiers fashions? What is an Unwillingness to do something contrary to custom? How do you write a convocation letter? If you pass out at a party and you take off your shoes what does this mean? Should southern be capitalized in southern hospitality? What do the letters SSStJ mean after someones name? How do you say sit down little girl in Haitian Creole? Can someone assist me and give me a sentence using the word setting as a particple sentence please?