The term inevitability can be broken down into four crossword solutions: NECESSITY (9 letters), FATALITY (8 letters), FATE (4 letters), and DESTINY (7 letters). NECESSITY refers to something that is required or essential, while FATALITY is an unavoidable event or consequence. FATE is a predetermined course of events, while DESTINY is the predetermined future of a person or thing. All four of these terms are related to the concept of inevitability, which is the quality of being impossible to avoid or evade.