1 High school certificate (7)
5 Spoke in ignorance (7)
9 Bellicose (9)
10 San Antonio fort (5)
11 A writer of laments (7)
12 Cloths used in mending (7)
13 Very irritable (9)
15 Coarse files (5)
17 Not yesterday (5)
19 Teachers (9)
22 Find innocent (7)
25 Acquired the knowledge (7)
26 City in Viet Nam (5)
27 Grape plantations (9)
28 Jagged (7)
29 Inhabits (7)
Down
1 Haggles (7)
2 Struck with a fist (9)
3 Applause (7)
4 A Greek philosopher (9)
5 Pup (5)
6 Praise dishonestly (7)
7 Averse (5)
8 Snoozes (7)
14 Matings (9)
16 Villain (9)
17 Instructs (7)
18 Sharp high-pitched dog cries (7)
20 One who examines processes (7)
21 They inflict pain for pleasure (7)
23 Spanish for "Mister" (5)
24 Emissary (5)