The term 'STATE OF BEING SENIOR' can be summed up by the crossword solution SENIORITY, which is a nine-letter word. SENIORITY is a term used to describe the status of someone who has been in a particular position or job for a longer period of time than others. It is often used to refer to the amount of respect and authority that a person has due to their experience and length of service. SENIORITY is also used to determine who gets certain privileges, such as promotions or pay raises.