mentally stable (adjective) well-balanced: sensible; equal
Sinonime: aloof,
arrogant,
condescending,
egotistic,
haughty, high-and-mighty, high-flown, high-hat,
ostentatious,
overbearing,
patronizing,
persnickety*,
pompous,
pretentious, putting on airs,
remote, sniffy, snippy, snooty, snotty,
supercilious,
superior,
swanky, tony, uppish, uppity
Antonime: accepting,
benevolent,
friendly,
generous,
sociable,
welcoming