noun

the practice of training people to obey rules or a code of behaviour, using punishment to correct disobedience.

a lack of proper parental and school discipline

control,regulation,direction,order,authority,rule,strictness,a firm hand,routine,regimen,training,teaching,instruction,drill,drilling,exercise,use of punishment

verb

train (someone) to obey rules or a code of behaviour, using punishment to correct disobedience.

many parents have been afraid to discipline their children

train,drill,teach,school,coach,educate,regiment,indoctrinate,lay down the law to someone,bring into line