1. Not to be computed; of which the amount cannot be ascertained.

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

• samless,
• soumless,
• sumnless,
• zumless,
• xumless,
• dumless,
• eumless,
• symless,
• shmless,
• sjmless,
• s8mless,
• s7mless,
• sukless,
• sumlesse,
• sumess,
• sumles,
• sumelss,
• suumless,
• Summess,
• Sumeles

The adjective form of the word "sumless" is "sumless".

The plural form of the word "Sumless" is "Sumlesses".

The singular form of the word "Sumless" is "Sumless". The word does not change from plural to singular form.