English

agallop

From a- + gallop.

Formed from a- + gallop

Proto-Indo-European *uds- ‘up, out’

Proto-Germanic *uz- ‘out-’

Proto-West Germanic *uʀ- ‘up, out, over’

English a-

Proto-Indo-European *klaup-

Proto-Germanic *hlaupaną ‘to run, leap, spring’

Frankish *wala hlaupan ‘to run well’

Old French galoper ‘to gallop’

Middle English galopen ‘to gallop’

Today it means

adj galloping

Language periods are conventional ranges, not dates for this word.