The term 'proverbial' is often used to describe something that is well-known and widely accepted. The two crossword solutions for this term are 'FAMILIAR' and 'FAMOUS', both of which refer to the same concept. 'FAMILIAR' is an 8-letter word meaning well-known or commonly encountered, while 'FAMOUS' is a 6-letter word meaning widely known or celebrated. Both words can be used to describe something that is proverbially accepted.