Decidedly efficient following training initially (4)
I believe the answer is:
deft
'decidedly efficient following training initially' is the definition.
I can't tell whether this definition defines the answer.
'decidedly efficient following training initially' is the wordplay.
'initially' says to take the initial letters.
The first letters of 'decidedly efficient following training' is 'DEFT'.
Can you help me to learn more?
(Other definitions for deft that I've seen before include "'Skilful, quick and neat (4)'" , "Adroit, nimble" , "Proficient" , "Clever" , "Adriot and skilful" .)