What does the cryptic crossword clue "Conviction hits me badly (6)" mean?

The definition is "Conviction". The wordplay uses an anagram. anagram of HITS (synonym="HITS") + ME (synonym="ME") = THEISM The answer is THEISM.

Conviction hits me badly (6)

Independent Cryptic #11904 | 24 Across | 2024-12-04 flower