adj. 25B6; adjective
an unbending man : ALOOF, formal, stiff, reserved, remote, forbidding, cool, unfeeling, unemotional, unfriendly, austere; informal uptight, stand-offish.
unbending attitudes : UNCOMPROMISING, inflexible, unyielding, hard-line, tough, strict, firm, resolute, determined, unrelenting, relentless, inexorable, intransigent, immovable.