Boy Name · English Origin
Erastus
Considering Erastus? It is a boy name whose meaning is "Radiant light", rooted in English naming tradition, and ranks in our Rare popularity tier. Phonetically it shares territory with Erasmo.
Erastus meaning, origin, and usage
Meaning: Radiant light
Origin: English naming roots help connect Erastus to related English baby names.
Pronunciation: Baby Name Studio pronounces Erastus as E·R·A·S·T·U·S, with 7 letters and a boy usage profile.
Popularity: According to Baby Name Studio's 2026 tracker, Erastus is an uncommon, standout choice in the Rare tier.
Erastus variants, nicknames, middle names, and sibling names
- Variants and spelling ideas: Erastusa, Erastuse, Erastusy, Erastu.
- Nicknames: Eras and E.
- Middle names: Pair Erastus with a middle name that balances its substantial sound; start with the Erastus middle name generator.
- Sibling names: Erasmo, Errick, Erskin, Erskine, Erick — full picks on the sibling names for Erastus guide for a cohesive sibset.
- Similar names: Looking for names that sound like Erastus? Browse our names like Erastus guide for phonetic-neighbor picks.
- Explore more: use the Baby Name Explorer, name search, AI name generator, and Baby Name Studio homepage.
Frequently asked about Erastus
What does the name Erastus mean?
Erastus means "Radiant light" and is of English origin.
What is the origin of Erastus?
Erastus originates in English naming tradition.
How do you pronounce Erastus?
Erastus has 7 letters and is most commonly stressed on the first syllable.
Is Erastus a boy's or girl's name?
Erastus is primarily used as a boy's name in US records.
How popular is Erastus in 2026?
In our 2026 popularity tracker, Erastus sits in the Rare tier — an uncommon, standout choice.
What names are similar to Erastus?
Names that share Erastus's sound and style include Erasmo, Errick, Erskin, Erskine, Erick.
What middle names pair well with Erastus?
Good middle-name fits for Erastus pair an opposite syllable rhythm: if Erastus is short, lean longer (e.g. classical or three-syllable middles); if Erastus is longer, a one-syllable middle keeps the full name from feeling heavy.
What are good sibling names for Erastus?
Sibling names that pair naturally with Erastus share its rhythm without rhyming — Erasmo, Errick, Erskin all sit comfortably alongside it on a shortlist.