Fidelis
/F-V-D-V-L-V-S/
Faithful — Fidelis is the Latin word for fidelity itself, an adjectival name carrying clear classical weight. The motto "Semper Fidelis" of the US Marine Corps comes from the same root.
See Fidelis scored for your familyMeaning & origin
Fidelis is a boy's name of Latin origin, traditionally used in Christian families. The name means "Faithful — Fidelis is the Latin word for fidelity itself, an adjectival name carrying clear classical weight. The motto "Semper Fidelis" of the US Marine Corps comes from the same root." and belongs to the Divine cluster — names rooted in sacred meaning and spiritual tradition.
Common among German, Italian, European families, Fidelis carries cultural weight that goes beyond its dictionary definition — it's a name with a story and a community.
Numerology of Fidelis
Numerology assigns each name a single-digit destiny number by summing its letter values. Different schools use different mappings — NameRoot computes both so you can see how Fidelis resonates in either tradition.
How Fidelis sounds
NameRoot scores the phonetic fit of every name against the sound of your last name. The pronunciation of Fidelis breaks down into 7 phonemes: /F-V-D-V-L-V-S/. In the app, you'll see how those sounds flow with your family name across rhythm, stress, and consonant clusters.
Nicknames
Common affectionate forms of Fidelis — useful for everyday family conversation, early childhood, or as standalone given names themselves.
Variants across cultures
Fidelis appears in different forms across languages and traditions. Each variant carries the same root meaning with a distinct sound and spelling shaped by local phonology.
The six signals, applied to Fidelis
NameRoot scores every name across six independent dimensions. Here's how Fidelis maps to each — install the app to see the full compatibility score for your specific family.
Names similar to Fidelis
If Fidelis resonates with you, these names live in the same world — drawn from the same tradition, sharing the same meaning, or echoing a similar sound.
From the same tradition
Other Christian boy names, common in German families
Sharing the same meaning
Other Christian boy names from the Divine cluster
Names that sound similar
Christian boy names that open with the same syllables as Fidelis
Common questions about Fidelis
What does the name Fidelis mean?
Fidelis means "Faithful — Fidelis is the Latin word for fidelity itself, an adjectival name carrying clear classical weight. The motto "Semper Fidelis" of the US Marine Corps comes from the same root.." It is a boy name of Latin origin, traditionally used in Christian families.
Is Fidelis a boy or girl name?
Fidelis is most commonly used as a boy name.
What is the origin of the name Fidelis?
Fidelis is of Latin origin, used in Christian tradition, commonly among German, Italian, European families.
What are common nicknames for Fidelis?
Common short forms of Fidelis include Fed, Del.
What is the numerology of Fidelis?
Fidelis has a Pythagorean destiny number of 1 — leadership and pioneering spirit.
See how Fidelis scores for your family
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