The term 'not loyal' can be described by five different crossword solutions: FALSE (5 letters), FICKLE (6 letters), INSURGENT (9 letters), DESECRATED (10 letters), and DISAFFECTED (11 letters). FALSE implies that someone is not telling the truth, while FICKLE implies that someone is not reliable or consistent. INSURGENT implies that someone is actively rebelling against authority, while DESECRATED implies that someone has violated something sacred or holy. Finally, DISAFFECTED implies that someone has become alienated or estranged from a group or cause. All of these words describe someone who is not loyal to a particular cause or group.