• gronner,
• froaner,
• vroaner,
• broaner,
• hroaner,
• yroaner,
• troaner,
• geoaner,
• gdoaner,
• gfoaner,
• gtoaner,
• g5oaner,
• g4oaner,
• growaner,
• groner,
• graoner,
• groiner,
• groener,
• grawner,
• gruaner

• Groaned,
• greenery,
• grinner,
• grown,
• grammer,
• groner,
• greiner,
• granary,
• grimmer,
• crane,
• griner,
• grater,
• gruner,
• groans,
• Graver,
• graner,
• grocer,
• groan,
• grammar,
• greener,
• grayer,
• grander,
• Granier,
• grenier.

The adjective form of the word "groaner" would be "groan-inducing".

The plural of the "groaner" can be the "groaners".

The singular of the "groaner" can be the "groaner".