The term 'wicked one' can refer to a variety of people or entities. The crossword solutions for this term include 'FIEND' (5 letters), 'EVILDOER' (8 letters), 'DEVIL' (5 letters), 'SATAN' (5 letters), 'CANDLE' (6 letters), and 'corrupter' (9 letters). All of these words refer to someone who is malicious, evil, or immoral. FIEND and DEVIL are often used interchangeably to describe someone who is wicked or cruel. EVILDOER and corrupter are more specific terms that refer to someone who actively engages in immoral or unethical behavior. SATAN is a figure from the Bible who is seen as the embodiment of evil. Finally, CANDLE is a metaphor for a person's life, with the wicked one being the one who snuffs out the light of others.