pass into (verb) become: evolve into
Sinonime: astute, bullheaded, hard*, hard-boiled,
headstrong,
intractable, levelheaded, locked in, mulish,
obstinate,
pertinacious,
perverse, pigheaded,
practical, pragmatic, rational, realistic,
resolute, sensible,
shrewd, sober, stand pat,
tough, tough-nut, unsentimental,
unyielding, willful
Antonime: easy, easy-going,
laid-back,
merciful