12 letters · 16 points in Scrabble
adjective stubbornly resistant to authority or control
adjective marked by stubborn resistance to authority
originBorrowed from French récalcitrant, in derived from Latin recalcitrāns, recalcitrantis, present participle of recalcitrō, recalcitrāre (“be disobedient, kick back [as a horse]”), from calx (“heel”), 1820s.
Etymology from Wiktionary, CC BY-SA 3.0