Definition of "mystifyingly"

A wall label mystifyingly explains that it represents “a single silver particle from a vintage gelatin silver photographic print of ‘Reclining Figure No. 4, 1955’ by Henry Moore” enlarged 300,000 times.

2009 January 23, Kenneth Johnson, “Aesthetic Withdrawal in the Quest for Ideas”, in New York Times‎

Capello mystifyingly left Ashley Young out despite a match-winning display in the Euro 2012 qualifier win in Wales in March and he only underlined the folly of the decision by emerging as substitute at half-time and striking a fine equaliser six minutes after coming on.

2011 June 4, Phil McNulty, “England 2 - 2 Switzerland”, in BBC‎