Quick Crossword #16,479

1

Chinese criminal gang (5)

2

Perfect (5)

3

Excessively suitable person — killjoy (5.3-5)

4

Element discovered by Marie and Pierre Curie (6)

5

Juvenile Delinquent (5.8)

6

Maoism (anag) (6)

7

Brave — irritable (6)

12

Music and literature, let's say (4)

14

Wild Party (4)

15

Lack of interest (6)

16

A maneuver to achieve a specific objective (6)

17

Unless … (6)

19

Brief performance by a well-known actor (5)

20

Legal (5)