tameable, susceptive of taming; Untameable, not to be tamed.
"The Grammar of English Grammars"
Goold Brown
In time of peace his power over men would have raised him to the highest positions had his Bohemian exuberance of thought and speech been tameable.
"The Development of the European Nations, 1870-1914 (5th ed.)"
John Holland Rose
The tiger is tameable, the panther not so.
"Natural History of the Mammalia of India and Ceylon"
Robert A. Sterndale