1. Serving to instruct or inform.

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

• instructied,
• instructoe,
• instictive,
• instrusive,
• cinstructive,
• instructin,
• instructure,
• instructe,
• intractive,
• distructive,
• cunstructive,
• intructive,
• instructio,
• instructore,
• instructior,
• instrictive,
• instructuve,
• instriuctive,
• insructive,
• instuctive

• instinctively,
• constructive,
• institution,
• instinct,
• instruction,
• instructed,
• instructions,
• instruct,
• instructress,
• instauration,
• institute,
• Instructing,
• instructional,
• instructorship,
• inactive,
• inactiveness,
• inactivity,
• instrumentate,
• instinctive,
• instigative,
• inactivate,
• institutional,
• instrumental,
• instructor,
• interactive,
• inextricable,
• instrument,
• instructively.

The adjective form of the word "instructive" is "instructive".

The plural form of the word "instructive" is "instructives." However, "instructive" is not commonly used in the plural form, and it is more common to use it as an adjective to describe multiple things.

The singular form of the word "instructive" is "instructive".