1: A supporter starting to mock President Garfield's middle name (5)
2: Seasoning for lark (5)
3: Conductor of opera rising in encore (9)
4: He wrote a bit of poetry! (3)
5: How to get around doing business, essentially (3)
8: Contrarily accepted gold slab (5)
9: Delete Times editorial first (5)
10: Part of upside-down Greek letter (3)
11: Unappealing environment for a snooze (3)