The term 'SECOND BEST' can be defined by the crossword solutions INFERIOR (8 letters), LOSER (5 letters), GRADEB (6 letters), and RUNNERUP (8 letters). These words all refer to someone or something that is not the best, but is still considered to be of good quality. INFERIOR means lower in quality or rank than something else, while LOSER implies a person who has been defeated or has failed at something. Grade B refers to something that is of lower quality than the highest grade, and runner-up is someone who comes in second place in a competition. All of these words can be used to describe the term 'SECOND BEST'.