Defeat soundly is a phrase used to describe a situation in which one party has completely and overwhelmingly won over the other. The crossword solutions for this term include LICK (4 letters), SHELLAC (7 letters), TROUNCE (7 letters), SPANK (5 letters), THUMP (5 letters), CREAM (5 letters), CRUSH (5 letters), STOMP (5 letters), WHOMP (5 letters), TROMP (5 letters), TAR (3 letters), DRUB (4 letters), WHIP (4 letters), ROUT (4 letters), THRASH (6 letters), TRIM (4 letters), and WHOP (4 letters). All of these words are synonyms for defeating someone or something soundly, with each word having a slightly different connotation. For example, 'LICK' implies a quick and easy victory, while 'SHELLAC' implies a thorough and complete victory.