safe and sound
词形变化：
副词: safely | 形容词比较级: safer | 形容词最高级: safest | 名词: safeness |
同义词：
secure | unharmed | harmless | protected | dependable | sheltered | reliable | benign | innocuous | innocent | in safe hands | undamaged | uninjured | unhurt | unscathed | trustworthy | careful | cautious | guarded | snug | shielded | chest | trunk | foolproof | defensible | vault | till | sound | condom | rubber | safety | good | prophylactic |
反义词：