knock the bottom out of (verb) undermine: weaken
Sinonime: bullheaded,
contrary,
determined, foolhardy, froward, hard-core, hard-nosed, hard-shell,
heedless,
imprudent,
impulsive, intractable, locked-in, mule, mulish,
murder, obstinate, perverse, pig-headed,
rash,
reckless, refractory, self-willed, strong-minded,
uncontrollable, ungovernable,
unruly,
unyielding, willful
Antonime: calm,
docile,
moderate,
obedient,
submissive,
tolerant