English
instigative
From instigate + -ive.
Formed from instigate + -ive
Proto-Indo-European *(s)teyg- ‘to be sharp’
Latin īnstīgō ‘to instigate’
Latin īnstīgātus ‘stimulated, set on, incited, roused or urged’
English instigate
Today it means
adj Tending to instigate.
Language periods are conventional ranges, not dates for this word.
Etymograph / instigative