Men cracking a case can be intimidating! (7)
I believe the answer is:
menaces
'be intimidating' is the definition.
I can't judge whether this definition defines the answer.
'men cracking a case' is the wordplay.
'cracking' indicates anagramming the letters.
'case' with letters rearranged gives 'aces'.
'men'+'aces'='MENACES'
'can' is the link.
Can you help me to learn more?
(Other definitions for menaces that I've seen before include "Threatens" , "Threats" .)