The term 'BEATS DECISIVELY' can be expressed in a variety of ways, each with 8, 5, 6, and 10 letters respectively. These words are TROUNCES, ROUTS, STOMPS, and OUTCLASSES. To trounce someone means to defeat them decisively or soundly, while to rout someone is to defeat them completely. To stomp someone is to crush them with overwhelming force, and to outclass someone is to surpass them in skill or ability. All of these words imply a decisive victory for one side over the other.