Close to being like a miser's wad (5)
I believe the answer is:
tight
'close' is the definition.
(synonyms)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for tight that I've seen before include "South American nation" , "Parsimonious" , "Close-fitting; tense" , "Drunk, firm, concise" , "Mean; tipsy" .)