overstepo•ver•step /ˌəʊvə'step/ (overstepped, overstepped; overstepping)

vt 越过(界限、时间等)

• He overstepped his authority to make the decision. 他越权作出这个决定。

词组overstep the mark (做或说得)过分，超过限度

• He overstepped the mark when he said so. 他这样说就言过其实了。