The term 'DON'T USE' can be represented by four different crossword solutions: ESCHEW (6 letters), AVOID (5 letters), OMIT (4 letters), and WASTE (5 letters). All of these words mean to not use something, either by avoiding it, omitting it, or not wasting it. ESCHEW is the strongest of the four words, as it means to abstain from something completely. AVOID is similar, but implies that one should stay away from something. OMIT means to leave something out, while WASTE implies that one should not use something in an inefficient manner.