What does the cryptic crossword clue "Endless unhappiness for skinflint (5)" mean?

The definition is "Endless". The wordplay uses a deletion. MISER (deletion) = MISER; definition: "skinflint" The answer is MISER.

Endless unhappiness for skinflint (5)

Guardian Cryptic #29614 | 23 Down | 2025-02-10 flower