English
abator
From abate (“to enter without right after the owner dies and before the heir takes over”) + -or.
Formed from abate ‘to enter without right after the owner dies…’ + -or
Proto-Indo-European *bʰedʰ-
Latin battere
Late Latin abbattere
Anglo-Norman abatre
Middle English abaten ‘to beat down, bring down, calm down’
English abate
Today it means
noun a person who, without right, enters into a freehold on the death of the last possessor, before the heir or devisee
Language periods are conventional ranges, not dates for this word.
Etymograph / abator