Friday’s solutions:

Across: 1 Calm. 3 Advanced. 8 None. 9 Studious. 11 Introductory. 13 Escape. 14 Potent. 17 Acceleration. 20 Inedible. 21 Diva. 22 Detonate. 23 Send.

Down: 1 Consider. 2 Lunatic. 4 Detour. 5 Additional. 6 Choir. 7 Dusk. 10 Completion. 12 Standard. 15 Edifice. 16 Pellet. 18 Crest. 19 Find.