Quick Answer. The United States Postal Service offers two regular mail delivery services, First Class and Standard Post. First Class mail is typically delivered within one to three business days, depending on the location. Standard Post is typically delivered within two to eight business days.
Rebelliousness definition, defying or resisting some established authority, government, or tradition; insubordinate; inclined to rebel. See more.
Temerity is an English word that means  excessive confidence, audacity or authority. It often has a more positive connotation then boastful or arrogant.