'ensaddle' originates from English, formed by the prefix 'en-' (from Old French/Latin 'in-') combined with 'saddle', originally from Old English 'sadol'.

'saddle' changed from Old English 'sadol' to Middle English 'sadel' and eventually became the modern English word 'saddle'; 'ensaddle' was formed in English by adding the prefix 'en-' to 'saddle'.

Initially it meant 'to put a saddle on (an animal)', but over time it also developed a figurative sense meaning 'to burden or load someone with (something)'.