Firmly established or unlikely to change; inveterate.
Inured; toughened.
Having extra defences against attack; highly fortified.
Unfeeling; pitiless; callous.
Compliant; yielding to the will of others.
Lithe and agile when moving and bending.
Pliant, flexible, easy to bend.
To make or become supple.
To make compliant, submissive, or obedient.