1. Producing no effect.

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

• unoperative,
• inperitive,
• inparative,
• inopertive,
• uncoperative,
• inperative,
• imoperative,
• jnoperative,
• knoperative,
• onoperative,
• 9noperative,
• inoperatives,
• inoperatve,
• inoperativ,
• inopertaive,
• anoperative,
• inoparative,
• inopperation,
• inopertation,
• inoperatin

• in practice,
• imperatively,
• infernal,
• informer,
• informative,
• inferential,
• in operation,
• inoperable,
• Invertible,
• invertebrate,
• informatively,
• in private,
• information,
• infertile,
• informatics,
• inverter,
• inverted,
• invertase,
• imperative,
• imperativeness,
• uncooperative,
• inverted hang.

The adverb form of "inoperative" is "inoperatively".

The adjective form of "inoperative" is "inoperable".

The plural form of the word "inoperative" is "inoperatives".

The singular form of the word "inoperative" is "inoperativeness"