strike down,
cancel cause to die, especially suddenly; "The disease struck down many young men in the village"
write off -
concede the loss or worthlessness of something or somebody; "write it off as a loss"
acknowledge,
admit accept (someone) to be what is claimed or accept his power and authority; "The Crown Prince was acknowledged as the true heir to the throne"; "We do not recognize your gods"
write off -
write something fluently, and without hesitation