Across
1
Overbearingly arrogant (4,3,6)
13
Shape with four right angles (6)
21
With a wide-open mouth (5)
22
Source of irritation (4,2,3,4)
Down
2
Italian fashion designer (7,6)
3
Based on theoretical deductions – Rio pair (anag.) (1,6)
5
Kind of architecture – kind of bond in chemistry (5)
6
Very famous person (9,4)
12
Weak, cowardly person (7)
15
Careful use of money (6)
19
Timon of Athens, say (5)