1‘his intransigent attitude led to the quarrels with his friends’
uncompromising, inflexible, unbending, unyielding, unshakeable, unwavering, resolute, unpersuadable, unmalleable, unaccommodating, uncooperative, stubborn, obstinate, obdurate, pig-headed, bull-headed, single-minded, iron-willed, hard-line, hard and fast, diehard, immovable, unrelenting, inexorable, inveterate, rigid, tough, firm, determined, adamant, tenacious
British informal bloody-minded
North American informal balky, badass
We take a look at several popular, though confusing, punctuation marks.