The term A-NUMBER-ONE is a phrase used to describe something that is the BEST or highest quality. The crossword solutions for this term are SPOT (4 letters), PRIMO (5 letters), BEST (4 letters), and TOPS (4 letters). SPOT means to identify or recognize, PRIMO is an Italian word meaning first or foremost, BEST is an adjective meaning of the highest quality, and TOPS is an informal term meaning the BEST or highest quality. Together, these words all describe something that is the BEST or highest quality.