Suspect senator's attempting to overthrow government? (7)
I believe the answer is:
treason
'attempting to overthrow government?' is the definition.
I can't tell whether this defines the answer.
'suspect senator's' is the wordplay.
'suspect' indicates an anagram (a suspicious or unusual spelling).
'senator' anagrammed gives 'TREASON'.
Can you help me to learn more?
(Other definitions for treason that I've seen before include "Crime agains one's country" , "Perfidy" , "One rats (anag)" , "Mutiny" , "attempting to overthrow the king" .)