English
fomenter
From foment + -er.
A compound of foment + -er
Proto-Indo-European *dʰegʷʰ- ‘to burn’
…
Latin fōmentum ‘lotion’
Late Latin fōmentāre
Old French fomenter
Middle English fomenten ‘to apply a warm, soft medicament’
English foment
Today it means
noun One who incites or promotes.
Language periods are conventional ranges, not dates for this word.
Etymograph / fomenter