casualy

ad.漫不经心地；随意地；不拘礼节地

castanets, castaway, caste, castellated, castigate, castigation, casting, casting vote, castle, castoff, castor (also caster), castor oil, castor sugar (also caster sugar), castrate, castration, casual, casually, casualness, casuals, casualty, casuist, casuistic, casuistically, casuistry, casus belli, cat, cat burglar, cat out of the bag, cat's-cradle, Cat's-eye, cat-o-nine-tails, cataclysm, cataclysmic, catacombs, catafalque, catalepsy, cataleptic, catalog, catalogue, catalogue (US also catalog),