The two crossword solutions for the term 'ONE-THIRD OF 'ET CETERA'?' are YADDA (5 letters) and YADA (4 letters). YADDA and YADA are both slang terms that are used to mean 'etcetera'. They are derived from the Hebrew phrase 'yada yada', which is a phrase used to indicate that something has been said or done in a repetitive manner. YADDA and YADA are often used as a substitute for the phrase 'et cetera' when speaking informally.