What does the cryptic crossword clue "Very Republican line brings no joy (6)" mean?

The wordplay uses a charade (building blocks). SO (synonym="very") + R (synonym="Republican") + ROW (synonym="line") = SORROW The answer is SORROW.

Very Republican line brings no joy (6)

Guardian Cryptic #29198 | 9 Across | 2023-10-11 flower