Source : Webster's Revised Unabridged Dictionary (1913)

Striking \Strik"ing\, a.
   Affecting with strong emotions; surprising; forcible;
   impressive; very noticeable; as, a striking representation or
   image; a striking resemblance. ``A striking fact.'' --De
   Quincey. -- {Strik"ing*ly}, adv. -- {Strik"ing*ness}, n.

Source : WordNet®

strikingly
     adv : in a striking manner; "this was strikingly demonstrated";
           "the evidence was strikingly absent"