English
fortifier
From fortify + -er.
A compound of fortify + -er
Proto-Indo-European *bʰerǵʰ- ‘to ascend, rise up’
…
Latin fortis ‘powerful, strong’
Late Latin fortificāre ‘to strengthen, fortify’
Old French fortifier
Middle English fortifien
English fortify
Today it means
noun One who fortifies.
Language periods are conventional ranges, not dates for this word.
Etymograph / fortifier