Not attempting to hide powerful explosive initially in sole (6)
I believe the answer is:
openly
'not attempting to hide' is the definition.
I can't tell whether this defines the answer.
'powerful explosive initially in sole' is the wordplay.
'initially' says to take the initial letters.
'in' indicates putting letters inside.
'sole' becomes 'only' (synonyms).
The first letters of 'powerful explosive' is 'pe'.
'pe' inserted within 'only' is 'OPENLY'.
Can you help me to learn more?
(Other definitions for openly that I've seen before include "Overtly" , "Without concealment, frankly" , "In frank and candid manner" , "In full view" , "Above board" .)