1. Durableness.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• durabilitty,
• dutrability,
• duribilty,
• desability,
• durabiltiy,
• durablilty,
• durabality,
• durabiity,
• irrability,
• duability,
• durablility,
• surability,
• dability,
• durablity,
• durabilty,
• duriability,
• dsiability,
• durabuility,
• diability,
• durabillity

• disability,
• durabolin.

The adjective form of the word "durability" is "durable".

The plural form of "durability" is "durabilities".

The singular form of the word "durability" is "durability".