The word "wussiest" refers to someone who is extremely weak or cowardly. However, there are many antonyms to this word that describe someone who is strong, brave, or confident. Some antonyms for "wussiest" include fearless, courageous, bold, daring, adventurous, heroic, powerful, and staunch. These words all connote bravery, resilience, and confidence, qualities that are the opposite of being wussy. So, if you want to describe someone who is the opposite of being weak and timid, use one of these antonyms instead of using "wussiest.