Somehow tremor is more violent (8)
I believe the answer is:
stormier
'more violent' is the definition.
Both the definition and answer are comparative adjectives. Maybe they are linked in a way I don't understand?
'somehow tremor is' is the wordplay.
'somehow' indicates an anagram.
'tremor'+'is'='tremoris'
'tremoris' is an anagram of 'STORMIER'.
Can you help me to learn more?
(Other definitions for stormier that I've seen before include "More turbulent and tempestuous" , "Having worse weather" .)