Seasoned officer's penetrating voice (5)
I believe the answer is:
salty
'seasoned' is the definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?
'officer's penetrating voice' is the wordplay.
'officer' becomes 'lt' (abbreviation for lieutenant).
'penetrating' is an insertion indicator.
'voice' becomes 'say' (I've seen this in another clue).
'lt' going within 'say' is 'SALTY'.
Can you help me to learn more?
(Other definitions for salty that I've seen before include "Brackish" , "Piquant" , "Saline" , "Sharp (language, humour)" , "Engagingly stimulating or provocative" .)