The term ONE OPPOSED can be broken down into four crossword solutions: NAY (3 letters), ANTI (4 letters), FOE (3 letters), and CON (3 letters). NAY is an interjection used to express dissent or disagreement, while ANTI is a prefix meaning 'AGAINST' or 'opposed to'. FOE is a noun meaning 'ENEMY' or 'ADVERSARY', and CON is a prefix meaning 'AGAINST'. Together, these words indicate that ONE OPPOSED is someone who is AGAINST something or someone, or is in opposition to them.