The Sunday Crossword No 3108, Sunday 12 Jul 2020

ACROSS
1   Idiot to listen to Observer bigwig (not really listening) (5-5) CLOTH-EARED {CLOT}{HEAR}{ED}
6   Extraordinary power sees prison term reduced, twice (2-2) JU-JU {JUg}{JUg}
9   ‘Substance’ and ‘limitless mass’, we’re told; time will tell (4,3,3) WAIT AND SEE (~weight and sea)
10 Notion discovered in review of encyclopaedia (4) IDEA [T<=]
12 Frantic Met’s about to save people offering defences (11) EMBANKMENTS {EM{BANK}{MEN}TS*}
15 One of two footballers, calm, returning with malice concealed (7) NEVILLE {NEV{ILL}E<=}
16 Bathroom features: abrasive hard sponges, primarily? (7) LOOFAHS {LOO}{Fe...s}{Ab...e}{Hard}{Sp...s} &lit
17 Some narwhal I butchered to get seafood (7) HALIBUT [T]

19 Wood that sang, perhaps (of birth, that is) (7) NATALIE {NATAL}{IE}
20 Hansel and Gretel running with wobbly legs away from brute (11) NEANDERTHAL {HANsel+AND+gRETEL}*

23 Flower taken from Fair Isle (4) IRIS [T]

24 Company minutes with potential to settle (10) COMPROMISE {CO}{M}{PROMISE}
25 Primarily, geriatric and getting asinine? (4) GAGA Acrostic &lit
26 One who looks at signs: 'logo-starer', fancifully (10) ASTROLOGER*

DOWN
1   Bullies those with beef? (4) COWS [DD]
2   Road signs every so often involved God (4) ODIN {rOaD+sIgNs}
3   Star perhaps loved by any he moved (8,4) HEAVENLY BODY*
4   German car tooted endlessly within earshot (7) AUDIBLE {AUDI}{BLEw}
5   Timeless English aquatic bird on a lake (7) ETERNAL {E}{TERN}{A}{L}
7   Danube and Nile flowing? That’s beyond doubt (10) UNDENIABLE*
8   Nudist’s sea-swimming without support (10) UNASSISTED*
11 What’s produced by conversion of us immoral lot? (8,4) IMMORTAL SOUL* &lit
13 Wench wanting to repeatedly lose weight to become delightful (10) ENCHANTING {wENCH}{wANTING}
14 Reckoning essence of native language is translated (10) EVALUATING {naTIVE+LANGUAge}*
18 Stimulants: great amounts vessel contained (4-3) TURN-ONS {T{URN}ONS}
19 Nary a little laugh for a loser (2-5) NO-HOPER {NO}{HO}{PER}
21 Unpleasant odour of ancient pottery (4) MING [DD]
22 Poet to look like a wolf, reportedly (4) LEAR (~leer)

Reference List

Company = CO, Minutes = M, English = E, Lake = L, Weight = W