Highlight is a cute cat leaping across tiny space (10)
I believe the answer is:
accentuate
'highlight' is the definition.
(thesaurus)
'cute cat leaping across tiny space' is the wordplay.
I cannot really understand how this works, but
'across' could be 'ac' (I've seen this in other clues) and 'ac' is found in the answer.
'space' could be 'en' (in printing, a space as wide as a letter 'n') and 'en' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'is a' is the link.
Can you help me to learn more?
(Other definitions for accentuate that I've seen before include "Emphasise" , "Stress" , "Make more prominent" , "Draw attention to" .)