The term 'YEARS AGO' can be described by four different crossword solutions: PAST (4 letters), YORE (4 letters), HISTORY (7 letters), and ONCE (4 letters). PAST is a word that refers to a time that has already happened, usually in the distant PAST. YORE is an old-fashioned word for a long time ago. HISTORY is the study of PAST events, which includes the study of years ago. Finally, ONCE is a word that means at one time in the PAST. All of these words refer to a time that has already passed, and can be used to describe the term 'YEARS AGO'.