Variant of Alethea, from Greek 'aletheia' meaning truth.
Aleitha comes from Alethea, the Greek name built on aletheia, meaning truth. That source gives the name a distinctly classical and philosophical character, since truth in Greek thought was not only factual correctness but also the idea of what is unconcealed or revealed.
Aleitha preserves that elevated meaning while softening the older form into something more lyrical and personal. As a modern variant, it feels like a name designed to keep virtue at the center without sounding severe. The ending gives it a graceful, almost ethereal quality, but the core remains anchored in one of the oldest and most serious ideals in naming. Aleitha therefore reads as both delicate and principled, a name with quiet moral weight and a refined, uncommon finish.