to make more harsh, uncompromising, or severerecent changes to the drunk driving laws harshen penalties for repeat offenders
recent changes to the drunk driving laws harshen penalties for repeat offenders
harden, stiffen, strengthen, toughen
ameliorate, ease
lessen, moderate, soften
in 1824
英语同义词词典收录了63618条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。