verb

change one’s will or take other steps to prevent (someone) from inheriting one’s property.

the Duke is seeking to disinherit his eldest son

cut someone out of one’s will,cut off,dispossess,impoverish,disown,repudiate,renounce,reject,oust,cast off,cast aside,wash one’s hands of,have nothing more to do with,turn one’s back on,cut off without a penny