SMARTENS (UP) is a term that can be used to describe the process of becoming more knowledgeable and experienced. The crossword solutions for this term are WISES (5 letters), SPRUCES (7 letters), and GETSWISE (8 letters). WISES is a verb meaning to become wise or gain knowledge. SPRUCES is a verb meaning to make or become more lively, vigorous, or attractive. GETSWISE is an adjective meaning having or showing wisdom or good judgment. All three words can be used to describe the process of SMARTENS (UP).