Incapable of being controlled, subdued, or tamed.(adjective)
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Use "untameable" in a sentence
"Whilst writing the foregoing I was not aware that any attempt had been made to domesticate these so-called untameable oxen; but on reading an account of these cattle by Mr. Hindmarsh, of Newcastle-upon-Tyne,"
"Rajasthan, India There was a time when John Singh was considered "untameable" by his family, his wife Faith remembers."
"To sketch, even so early as six A.M., without becoming the nucleus of a crowd, is, of course, impossible; and the crowd this time consisted of school children of all ages, quite as "untameable," and almost as numerous, as the flies of Santa Croce."