On etymology and mythology of Aletheia
Aletheia (αληθεια) is Greek for 'truth'. It derives from 'alethus' which means 'true', literally 'not concealing' from privative prefix a- 'not' + 'lethe' ('forgetfulness', 'oblivion'). As such, aletheia can be translated also as 'remembering'. Its gender is feminine. It is pronounced 'al-e-THEE-a'.
In Greek mythology Aletheia is a female daimon of truth, truthfulness, and sincerity. Her opposites are Dolos (trickery), Apate (deception) and the pseudologoi (lies).