1. Not freely communicating with the open air; not airy.

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

• anless,
• wirless,
• airlies,
• tirless,
• inless,
• arness,
• areless,
• atless,
• aimlessy,
• tailess,
• wierless,
• anyless,
• illess,
• eairlest,
• hairloss,
• wairless,
• ailles,
• agless,
• uinless,
• airlnes

• airlike.

The adjective form of the word "airless" is "airless" itself.

The plural form of the word "airless" is "airless." The word does not change in its plural form.

The singular form of the word "airless" is "airless". This word does not change when used in the singular or plural form.