Girl name · Latin
Fidelia
“faithful”
Vibes
Common nicknames
Short-forms and diminutives parents often use for Fidelia.
Explore Fidelia further
Similar-feel alternatives, or middle-name candidates that pair well with Fidelia — both ranked by the same scoring system (vibe overlap, syllable rhythm, origin compatibility).
About the name
Fidelia is the feminine of Latin fidelis, faithful — the same word behind fidelity, infidel and the Marine Corps motto. It belongs to the family of Latin virtue names that Puritan and later Victorian parents used alongside Constance, Prudence and Patience.
It saw real use in nineteenth-century America and in Nigeria, where Latin virtue names entered through mission schools and stayed. It has not ranked in the US since the 1890s.
Delia is the short form that makes it modern. Four syllables want one (Fidelia Rose, Fidelia Jane). On our vibe map it is Vintage Elegant with Heirloom depth.
More Latin names
Fidelia sits in our Latin set — these share its roots.
All Latin names →Fidelia — common questions
Is Fidelia a boy or girl name?
Fidelia is traditionally a girl name of Latin origin.
What does the name Fidelia mean?
Fidelia means “faithful” of Latin origin. Fidelia is the feminine of Latin fidelis, faithful — the same word behind fidelity, infidel and the Marine Corps motto. It belongs to the family of Latin virtue names that Puritan and later Victorian parents used alongside Constance, Prudence and Patience.
Where does the name Fidelia come from?
Fidelia is Latin in origin. It saw real use in nineteenth-century America and in Nigeria, where Latin virtue names entered through mission schools and stayed. It has not ranked in the US since the 1890s.
What are common nicknames for Fidelia?
Fidel, Delia, and Fifi — the short-forms parents most often use for Fidelia.
How popular is Fidelia?
Fidelia did not make the top 1,000 girls' names in US Social Security Administration data for 2025, which makes it genuinely rare in the US.
Bring the name into the room
A couple of nice things named Fidelia you might want for the nursery.