Surprisingly, Ken seems to show humility (8)
I believe the answer is:
meekness
'humility' is the definition.
(I know that meekness is a type of humility)
'surprisingly ken seems' is the wordplay.
'surprisingly' is an anagram indicator (a surprising ordering of the letters).
'ken'+'seems'='kenseems'
'kenseems' with letters rearranged gives 'MEEKNESS'.
'to show' acts as a link.
(Other definitions for meekness that I've seen before include "Formally inform" , "Submissive nature" , "Timidity" , "Submissive humility" , "submission" .)