This crossword No. 15481 clues and answers were published on Thu 19 Dec 2019 and the puzzle can be visited by following The Guardian Quick Crossword No. 15481 link.
All Across Clues and Answers:
5-across – Student of the origins of the universe : COSMOLOGIST
7-across – Floating marker : BUOY
8-across – Student of reasoning : LOGICIAN
9-across – Device for clipping papers together : STAPLER
11-across – Brawny : BURLY
13-across – Recently married man : GROOM
14-across – In total : ALLTOLD
16-across – American songbird : BLUEBIRD
17-across – Completely destroy : RAZE
18-across – Boiler : WATERHEATER
All Down Clues and Answers:
1-down – Light grey coloured : ASHY
2-down – Rock : BOULDER
3-down – Stinky : PONGY
4-down – Rank one above baron : VISCOUNT
5-down – Retaliation : COUNTERBLOW
6-down – First person to do something entirely new : TRAILBLAZER
10-down – Belongings : PROPERTY
12-down – Make happy : GLADDEN
15-down – Journal : DIARY
17-down – Speed : RATE
This crossword has in total 20 where 10 are across and 10 are down.