The term DISLOYAL ONE can be defined by the following crossword solutions: APOSTATE (8 letters), JUDAS (5 letters), RAT (3 letters), RECREANT (8 letters), THREETIMER (10 letters), and TREASONABLEMAN (14 letters). An APOSTATE is someone who has abandoned their religious faith, while JUDAS is a figure in the Bible who betrayed Jesus. A RAT is someone who betrays a friend or colleague, and a RECREANT is someone who is cowardly or unfaithful. A threetimer is someone who has betrayed someone three times, and a treasonableman is someone who is guilty of treason. All of these words refer to someone who is disloyal or untrustworthy.