1. Having no wings; not able to ascend or fly.

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

• wirless,
• inless,
• wintess,
• wandless,
• winnless,
• winess,
• wickless,
• wierless,
• minless,
• wringles,
• mineless,
• uinless,
• windaless,
• winlass,
• whingles,
• wingles,
• singless,
• igless,
• winfless,
• winegless

• wing elm,
• winkle,
• winslett,
• wingler,
• winkles,
• Winkler,
• winglike,
• wineglass.

The adjective form of "wingless" is "wingless".

The plural form of the word "wingless" is "winglesses" although it may be more commonly used as an uncountable noun without a plural form.

The singular form of the word "wingless" is "wingless" itself. The word does not change when going from plural to singular.