if it isn't Aに一致する言葉

英和・和英辞書(1)

• if it [that] isn't A

  ((略式))なんとＡ（人・物）ではないか！（◆「もしＡでなければ（驚きだ）」の意）Well, if it isn't Susan. What are you doing here?だれかと思えば...