This crossword No. 15818 clues and answers were published on Mon 18 Jan 2021 and the puzzle can be visited by following The Guardian Quick Crossword No. 15818 link.
All Across Clues and Answers:
1-across – Keep going : PERPETUATE
7-across – Pariah : OUTCAST
8-across – Promotional words on a book jacket : BLURB
10-across – Plug used to stop a hole : BUNG
11-across – Nit-picking : PEDANTIC
13-across – Leading authority : ORACLE
15-across – Cheapen : DEMEAN
17-across – National flower of Wales : DAFFODIL
18-across – Hit hard : WHAM
21-across – Practice session : DRILL
22-across – Spend extravagantly : SPLURGE
23-across – Writing materials : STATIONERY
All Down Clues and Answers:
1-down – Hoax : PUTON
2-down – Genuine : REAL
3-down – Each of two : EITHER
4-down – Not defeated : UNBEATEN
5-down – Legal custodian : TRUSTEE
6-down – Passionate : HOTBLOODED
9-down – Old newspaper or periodical : BACKNUMBER
12-down – Illuminated at night : FLOODLIT
14-down – Trouble : AFFLICT
16-down – Shambles : FIASCO
19-down – Make haste : HURRY
20-down – Inkling : CLUE
This crossword has in total 24 where 12 are across and 12 are down.