calcitrant

== English == === Etymology === From Latin calcitrans, present participle of calcitrare (“to kick”), from calx (“heel”), calcis (“heel”). === Adjective === calcitrant (comparative more calcitrant, superlative most calcitrant) stubborn; refractory === Anagrams === caltractin == Latin == === Verb === calcitrant third-person plural present active indicative of calcitrō