deponer

Etymology tree
Proto-Indo-European *de
Proto-Indo-European *-h₁
Proto-Indo-European *déh₁
Proto-Italic *dē
Latin dē
Latin dē-
Proto-Indo-European *h₂ep
Proto-Indo-European *-o
Proto-Indo-European *h₂epó
Proto-Indo-European *h₂pó
Proto-Indo-European *teḱ-der.
Proto-Indo-European *tḱey-der.
Proto-Italic *sinō
Proto-Italic *pozinō
Old Latin *poznō
Latin pōnō
Latin dēpōnō
English depone
Proto-Indo-European *-yósder.
Proto-Italic *-āzijos
Latin -āriusnom.
Latin -āriusbor.
Proto-Germanic *-ārijaz
Proto-West Germanic *-ārī
Old English -ere
Middle English -ere
English -er
English deponer
From depone + -er.