curbable

curbable

(ˈkɜːbəbəl)
adj
able to be curbed or restrained
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
They were initially delicate (but they were to become stronger and more robust), greedy (but their power appetites were curbable) and expensive (but mass production made them cheaper).