The term 'make inroads' can be broken down into three crossword solutions: ATTACK (6 letters), ENCROACH (8 letters), and IMPINGE (7 letters). All three words have similar meanings, which is to make progress or gain ground in a gradual or subtle way. ATTACK implies a more aggressive approach, while ENCROACH and IMPINGE suggest a more subtle approach. In general, the term 'make inroads' suggests that one is making progress in a certain area, whether it be in business, politics, or any other field.