Abundant — intense (4)
I believe the answer is:
rich
This clue is a double definition.
'abundant' is the first definition.
(similar in meaning)
'intense' is the second definition.
(thesaurus)
(Other definitions for rich that I've seen before include "Well-heeled" , "Having many possessions" , "productive" , "Having lots of property" , "Possessing material wealth" .)