bareback

UK: /ˈbɛə^rbæk/ US: /ˈbɛrˌbæk/ ,(bâr′bak′)

WordReference Random House Learner's Dictionary of American English © 2025

bare•back /ˈbɛrˌbæk/  also ˈbareˌbacked, adj., adv. 

1. on a horse with no saddle:
   a bareback rider; rode bareback.

WordReference Random House Unabridged Dictionary of American English © 2025

bare•back  (bâr′bak′), adv., adj. 

1. with the back of a horse, burro, etc., bare;
   without a saddle:
   to ride bareback; a bareback rider.

Also, bare′backed′. 

• bare¹ + back¹ 1555–65

Collins Concise English Dictionary © HarperCollins Publishers::

bareback / ˈbɛəˌbæk/, barebacked adjective , adverb

1. (of horse riding) without a saddle