The term ADAR PREDECESSOR is composed of four crossword solutions: SHEBAT (6 letters), PURIM (5 letters), NISAN (5 letters), and MONTHS (6 letters). Shebat is the twelfth month of the Jewish calendar, and is the predecessor to Adar. Purim is a Jewish holiday that takes place in the month of Adar. Nisan is the first month of the Jewish calendar, and is the predecessor to Shebat. Months is a general term for a period of time lasting approximately one twelfth of a year.