The term 'effort to convince' can be summarized by the crossword solution 'SUASION, ' which is a seven-letter word. SUASION is defined as the use of persuasion or influence to convince someone to do something. It is often used in the context of marketing and sales, where businesses attempt to persuade customers to purchase their products or services. SUASION is also used in politics, where politicians try to convince voters to support their policies or candidates. In general, SUASION is an important tool for anyone who wants to influence the opinions or actions of others.