One doggedly capable of a terrific start? (5)
I believe the answer is:
trier
This clue could be a double definition.
'one doggedly capable of' is the first definition.
The definition suggests a singular noun which matches the answer.
'a terrific start?' is the second definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
Can you help me to learn more?
(Other definitions for trier that I've seen before include "One who makes an effort" , "Determined person" , "One always ready to have a go" , "One who doesn't give up - judge?" , "Test" .)