1. Free from guile; artless.

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

• guiless,
• guildless,
• fuileless,
• vuileless,
• buileless,
• huileless,
• yuileless,
• tuileless,
• gyileless,
• ghileless,
• gjileless,
• giileless,
• g8ileless,
• guilesless,
• guilless,
• guileles,
• guilleless,
• guileness,
• goleless,
• gudieress

The adverb form of "guileless" is "guilelessly".

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

The plural form of "guileless" remains the same, as it is an adjective and does not have a plural form.

The singular form of the word "guileless" is "guileless". The word does not change in its singular form.