Aleithea as a Baby Name. Meaning and Origin of Aleithea

What is the meaning of the name Aleithea ?

The baby name Aleithea is a Female name , 4 syllables long and is pronounced IPA: /əˈliːθiə/ — respelling: uh-LEE-thee-uh,IPA: /əˈleɪθiə/ — respelling: uh-LAY-thee-uh,alternate: ah-LEE-thee-uh.

Aleithea is Greek in Origin.

Aleithea is a modern, rare variant of Alethea, an English given name derived from Greek aletheia (ἀλήθεια), “truth,” from a- “not” + lethe “forgetfulness, concealment.” Pronounced a-LEE-thee-uh, it aligns with contemporary interest in Greek-rooted names and the appealing nickname Thea.

The base form Alethea entered English use in the 17th century among Puritans and the gentry as a virtue name; notable bearers include Lady Alethea Talbot, Countess of Arundel, and the novelist Alethea Lewis. Usage has remained modest but steady in the English-speaking world, with periodic revivals. Spelling variants include Alethea, Alithea, Alethia, and the more Hellenized Aletheia; Aleithea sits between these, echoing the Greek while retaining familiar English rhythm. Short forms and pet names include Thea, Letha, Allie, and Lia. The name’s core meaning centers on sincerity, clarity, and unveiled truth.

⚙ Aleithea is an extremely rare name. Across our dataset of national birth registries and international name records, Aleithea appears only 1 time in total — found in 1 country. If you're considering it, you'd be giving your child a name almost nobody else has.