見違 みちがえる
michigaeru

Ichidan Verb

1. to mistake (for something or someone else); to be unable to recognize

Transitive
あまりにお わりになっていて見違 みちがえるほどです。
amarini okawarini natte ite michigaeruhododesu.
You have changed so much that I can hardly recognize you.
Other forms: