Inciteful does not appear in most dictionaries, however it sounds like it means "that which incites". The
Oxford English Dictionary defines it as a synonym for provocative.
There is a word 'insightful' which means perceptive, 'inciteful' is not well known as a word.
I believe the word you're referring to is 'inciting'
- incite - provoke or stir up; "incite a riot"; "set off great unrest among the people" etc. etc.
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