• armyworms,
• army worm,
• zrmyworm,
• srmyworm,
• wrmyworm,
• qrmyworm,
• aemyworm,
• admyworm,
• afmyworm,
• atmyworm,
• a5myworm,
• a4myworm,
• armyaorm,
• warmyworm,
• Army worme,
• Arem worm,
• Armey worm,
• Arimy worm,
• Armeyworms,
• Arimyworms

• armor,
• army worm.

The adjective form of the word "armyworm" is "armyworm". The adjective form remains the same as the noun form in this case.

The plural of the "armyworm" can be the "armyworms".

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