Root : fid
means faithful or devoted.
Origin: Latin; ‘fidelis’
FIDELITY
noun
>> faithfulness to a person, cause, or belief, demonstrated by continuing loyalty and support.
Usage :
The samurai promised his fidelity to is lord.
INFIDEL
noun
>> a person who does not believe in religion or who adheres to a religion other than one’s own.
Usage :
They wanted to secure the holy places from the infidels.
DIFFIDENT
adjective
>> modest or shy because of a lack of self-confidence.
Usage :
One might find the present youth to be diffident.
CONFIDANT
noun
>> a person with whom one shares a secret or private matter, trusting them not to repeat it to others.
Usage :
His wife also his confidant,was entrusted with the responsibility of raising money for the election.
FIDUCIARY
adjective
>> involving trust, esp. with regard to the relationship between a trustee and a beneficiary.
Usage:
The company has a fiduciary responsibility towards its share holders.
INFIDELITY
adjective
>> the action or state of being unfaithful to a spouse or other sexual partner.
>> unbelief in a particular religion, esp. Christianity.
Usage :
John’s infidelities carried on after his marriage.
BONA FIDE
adjective
>> genuine; real.
Usage :
Only bona fide members of the company are allowed to use the logo.