1. To set or urge on; to incite, generally to what is bad.

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

• instight,
• ivestigate,
• inticate,
• indigate,
• instiute,
• instiagated,
• insigated,
• instagater,
• invistigate,
• instite,
• insigate,
• institite,
• instituate,
• instigater,
• instigatig,
• instagates,
• incestigate,
• instagate,
• inastiate,
• isntigate

• insatiate,
• inmost,
• instigation,
• inchoate,
• inestimable,
• insatiable,
• instillment,
• incitive,
• instigant,
• instigator,
• instantiate,
• instilling,
• instead,
• ingathering,
• institution,
• instill,
• instigative,
• in-situ,
• insatiably,
• instructed,
• inactive,
• instinct,
• institute,
• instilment,
• instead of,
• instep,
• instant,
• instinctual,
• In situ,
• inactivate,
• investigate,
• instinctive,
• instillator,
• instil.

The adverb form of the word "instigate" is "instigatingly".

The adjective form of the word "instigate" is "instigative" or "instigating".

The plural form of the word "instigate" is "instigates"

The singular form of the word "instigate" is "instigator"