The term 'to a tee' is an idiom that means to be exact or precise. The crossword solutions for this term are PAT (3 letters), IDEAL (5 letters), and JUSTSO (6 letters). PAT stands for 'perfectly acceptable type', which implies that something is satisfactory. IDEAL means 'the best possible' and suggests that something is as good as it can be. JUSTSO means 'exactly right' and implies that something is exactly what is needed. All three of these words together suggest that something is perfect and exactly what is needed.