To dive in splashily is lovely! (6)
I believe the answer is:
divine
'lovely' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'to dive in splashily' is the wordplay.
'dive in' anagrams to 'DIVINE'.
But, I am unsure how this is indicated.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for divine that I've seen before include "To do with deity" , "Find water" , "Of or coming from God" , "Appertaining to God" , "wonderful" .)