Able to extend sentence served by youth leader (8)
I believe the answer is:
stretchy
'able' is the definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?
'extend sentence served by youth leader' is the wordplay.
I cannot quite see how this works, but
'extend' could be 'stretch' (synonyms) and 'stretch' is found in the answer.
'youth' could be 'y' and 'y' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'to' is the link.
Can you help me to learn more?
(Other definitions for stretchy that I've seen before include "Of variable length, perhaps" , "Flexible" , "Elastic" .)