Thursday’s solutions:

Across: 1 Unclog. 4 Suffrage. 10 Watercourse. 11 Tic. 12 Swarm. 13 Foolhardy. 14 Utensil. 15 Infant. 19 Excess. 21 Impiety. 25 Scrimping. 27 Singe. 28 Nib. 29 Regurgitate. 30 Lollipop. 31 Lentil.

Down: 1 Unwise. 2 Cathartic. 3 Oarsman. 5 Uproot. 6 Freshen. 7 Astir. 8 Encrypts. 9 Forfeit. 16 Attendant. 17 Seasonal. 18 Imagery. 20 Samurai. 22 Inspire. 23 Gingko. 24 Repeal. 26 Rebel.