Sits during reel as they lep about, full of energy (8)
I believe the answer is:
tireless
'full of energy' is the definition.
(I've seen this before)
'sits during reel as they lep' is the wordplay.
I cannot really understand how this works, but
an anagram of 'reel' is 'rele' which is within the answer.
an anagram of 'sits' is 'tiss' which is located in the left over letters.
No letters remain.
This explanation may well be incorrect...
'about' acts as a link.
Can you help me to learn more?
(Other definitions for tireless that I've seen before include "Full of stamina" , "Having great energy" , "Full of energy" , "Permanently lively" , "Never grows weary, inexhaustible" .)