antiaccelerator

Etymology tree
Proto-Indo-European *h₂ent-
Proto-Indo-European *-s
Proto-Indo-European *h₂énts
Proto-Indo-European *-i
Proto-Indo-European *h₂énti
Ancient Greek ᾰ̓ντῐ́ (ăntĭ́)
Ancient Greek ἀντι- (anti-)der.
English anti-
Proto-Indo-European *h₂éd
Proto-Italic *ad
Proto-Italic *ad-
Latin ad-
Proto-Indo-European *kel-der.
Latin celer
Proto-Indo-European *-h₂
Proto-Indo-European *-éh₂
Proto-Indo-European *-yéti
Proto-Indo-European *-eh₂yéti
Proto-Italic *-āō
Latin -ō
Latin celerō
Latin accelerō
Latin accelerātuslbor.
▲
Latin accelerō
Proto-Indo-European *-tis
Proto-Indo-European *-Hō
Proto-Indo-European *-tiHō
Proto-Italic *-tiō
Latin -tiō
Latin accelerātiōder.
English accelerationbf.
English accelerate
Proto-Indo-European *-tōr
Proto-Italic *-tōr
Latin -tor
Latin -ātor
Old French -eorbor.
Middle English -our
▲
Latin -torlbor.
English -or
English accelerator
English antiaccelerator
From anti- + accelerator.