Yesterday’s solutions:

Across: 1 Piranha. 5 Phantom. 9 Shipshape. 10 Spill. 11 Tofu. 12 Irreverent. 14 Sarcasm. 15 Tuition. 17 Overall. 19 Stupefy. 20 Instigator. 22 Bomb. 25 Exult. 26 Spelunker. 27 Silicon. 28 Pharynx.

Down: 1 Posit. 2 Reinforce. 3 Nosy. 4 Anagram. 5 Prefect. 6 Abstemious. 7 Twice. 8 Militancy. 13 Fatalistic. 14 Showiness. 16 Ice hockey. 18 Liaison. 19 Shore up. 21 Skull. 23 Borax. 24 Hula.