Someone or something that is faithful or reliable.
The practicing members of a religion or followers of a cause.
Consistent with reality.
Reliable; worthy of trust.
Loyal; adhering firmly to person or cause.
Injective in specific contexts, e.g. of representations in representation or functors in category theory.
Engaging in sexual relations only with one's spouse or long-term sexual partner.
Having faith.
To overlay with quicksilver.
To treat with quicksilver.
The metal mercury.
An amalgam of mercury and tin applied to the backs of mirrors, quicksilvering.
Unpredictable, erratic or fickle; mercurial.