• aletheaa,
• alethea,
• aletia,
• Alethia,
• Altheia,
• aleteia,
• altheaia,
• alethiai,
• aletheiy,
• aletheiya

• lethe,
• Alethea,
• Letha,
• Alethia,
• Alecia,
• althea.

The adjective form of "aletheia" is "aletheian" or "aletheic".

The plural form of "aletheia" is also "aletheia" as it is a Greek word that does not have a distinct plural form in English.

The singular form of the word "aletheia" is still "aletheia". This word does not have variations based on singular or plural forms.