the guardian quick crossword

Across

5 Chest bone not

attached to the

sternum (8,3)

7 + (4)

8 Typical example (8)

9 Viral disease in

children (7)

11 Irish poet and

dramatist, d. 1939 (5)

13 Here it is! (5)

14 Inadequate (7)

16 Nonconforming (8)

17 Jacob’s twin brother (4)

18 It holds a computer’s

central printed circuit

(11)

Down

1 Flip (coin) (4)

2 Cork (7)

3 Growl in a threatening

manner (5)

4 Level of steepness (8)

5 Partition in case,

creating a concealed

space (5,6)

6 Everyday (3-8)

10 Inwardly-directed

compassion (4-4)

12 Kind of kangaroo (7)

15 Group of eight

musicians (5)

17 Electronic marketplace (4)