on a leash (adjective) restrained: calm, quiet
Sinonime: alienated,
ascetic, asocial,
austere,
cold,
cynical, eremetic, hermitlike,
introverted,
misanthropic,
reclusive,
remote, reserved, retiring,
solitary, standoffish, uncommunicative,
unfriendly, unsociable,
withdrawnAntonime: friendly, fun-loving, participating,
sociable