| esoteric(clandestine, underground, undisclosed) |
| extracurricular(fickle, untrustworthy, unprincipled, dirty-dealing) |
| fair-weather(fickle, untrustworthy, unprincipled) |
| faithless(fickle, untrustworthy, unprincipled, dirty-dealing) |
| falsehearted(fickle, untrustworthy, unprincipled, recreant, dirty-dealing) |
| feline(adjective, silent, sneak, skulking) |
| fickle(untrustworthy, unprincipled, dirty-dealing) |
| fly by night(expression, idiom, fickle, untrustworthy, unprincipled) |
| for eyes only(expression, idiom, sensitive) |
| foresworn(fickle, untrustworthy, unprincipled, dirty-dealing) |
| hidden away(expression, adjective, sensitive) |
| inching |
| inconstant(fickle, untrustworthy, unprincipled) |
| inferior |
| intelligence(adjective, secret, hidden, spy, covert) |
| kept concealed(expression, adjective, sensitive) |
| lying(fickle, untrustworthy, unprincipled, dirty-dealing) |
| masked(adjective, sneaky, covert, secretive) |
| mercentary(fickle, untrustworthy, unprincipled, dirty-dealing) |
| moonlighting(fickle, untrustworthy, unprincipled, dirty-dealing) |