fid-, fidel-
(Latin: believe, belief; trust, faith, true)
perfidious
Characterized by perfidy; guilty of breaking faith or violating confidence; deliberately faithless; basely treacherous.
perfidiously
1. In a perfidious manner.
2. Treacherously; traitorously; by breach of faith or allegiance.
3. Relating to, or characterized by perfidy (being faithless or disloyal; treachery).
perfidy
1. The deceitful violation of faith or promise; base breach of faith or betrayal of the trust reposed in someone; treachery.
2. Often, the profession of faith or friendship in order to deceive or to betray.
3. The quality or state of being faithless or disloyal; treachery.
4. An act or an instance of disloyalty.
Pietate, fide, et justicia.
With piety, fidelity, and justice.
Motto of Wilhelm VI, Landgrave of Hesse-Cassel (1629-1663).
Scientia vera cum fide pura.
True knowledge with pure faith.
Motto of Beloit College, Beloit, Wisconsin, USA.
semper fidelis
Always faithful.
Signum fidei.
The sign of faith.
Motto of Saint Mary's College of California, Moraga, California, USA.
solifidian
One who holds that faith alone, without works, is sufficient for justification (salvation).
solifidianism
The doctrine or tenet of justification (salvation) by faith alone.
unaffianced
To withdraw a pledge of marriage; unbetrothed.
unconfident
Lacking in confidence; unsure, not certain.
Virtute et fide.
By virtue and faith.
Virtuti non armis fido.
I trust to virtue, not to arms.
Cross references of word families that are related directly, or indirectly, to: "faith, trust; faithful, trusting; believe, belief":
cred-;
dox-.