No 13195, Monday 15 Mar 2021, Dr. X

Solution to 11A has been deliberately left unsolved and is to be answered only by a non-regular / novice commenter, with proper annotation. Those who have answered earlier in the week, please give others a chance.

ACROSS

1   Clear about liaisons at Thailand being most improper (8) DIRTIEST {RID<=}{TIES}{T}

5   Fellow getting unusually close in sailors’ quarters (6) FOCSLE {F}{CLOSE*}

10 Brash young woman slowly inhales dope on vacation with model (7) LADETTE {LA{DopE}{T}TE}

11 Female lost head, throttling pervert on one Japanese craft (7) O?I?A?I (Addendum - ORIGAMI {fO{RIG}AM}{1} - See comments) 

12 Turn to complain after losing wicket (5) HINGE wHINGE

13 Church gallery, dilapidated for a long time (5,4) ORGAN LOFT {FOR+A+LONG}*{T}

14 Warehouse articles containing phosphorus degenerate rapidly (2,4,3,3) GO DOWN THE PAN {GODOWN}{THE}{P}{AN}

18 Expensive contract to retain champion for horse race (12) STEEPLECHASE {STEEP}{LE{CH}ASE}

21 Mirrored solar device at hotel is unconventional (9) HELIOSTAT*

23 Regret love affair after abandoning a maiden finally (5) MOURN {aMOUR}{m...eN}

24 Most ladies around the Spanish club are desirable (7) WELCOME {W{EL}{C}OMEn}

25 Poor old bums in public vehicle (7) OMNIBUS {O+BUMS+IN}*

26 Stupidly tried to gulp hot stew (6) DITHER {DIT{H}ER*}

27 Brave revolutionary craving to capture northern base (8) CHEYENNE {CHE}{YE{N}N}{E}

DOWN

1   Seat of famous oracle in Philadelphia (6) DELPHI [T]

2   Gnawing mammal in rubbish outside dive (6) RODENT {RO{DEN}T}

3   Informed where one might find toilet roll — close to mop (2,3,4) IN THE LOOP {IN THE LOO}{moP}

4   What a careless dancer might do to offend? (4,2,4,4) STEP ON ONES TOES [DD]

6   Hunter working outside city in Brazil (5) ORION {O{RIO}N}

7   Wild pea in mushy plant found on sandy shores (3,5) SEA POPPY {S{PEA*}OPPY}

8   Being old, one gets pain (8) EXISTING {EX}{1}{STING}

9   Old mischievous gent, hot in sack, going around hotel (4,2,3,5) LONG IN THE TOOTH {GENT+HOT+IN+HOTEL}* Seems to be an error in the fodder. Extra E and an O less? (Addendum {GENT+HOT+IN}* in {LOOT} and {H}

15 Darling going round America with hot maiden gives bribe to keep it secret (4,5) HUSH MONEY {H{US}{H}{M}ONEY}

16 Abandoned largely cheesy romantic to get married (8) ESCHEWED {CHEESy}*{WED}

17 Hill-facing apartment failed to impress (4,4) FELL FLAT {FELL}{FLAT}

19 Time to get most sophisticated headdress (6) TURBAN {T}{URBANe}

20 Actually existing skill, not fake primarily (2,4) IN ESSE fINESSE

22 Old bar in Polish city (5) OPOLE {O}{POLE}

Reference List

Fellow = F, Female = F, Model = T, Wicket = W, Time = T, Phosphorus = P, Champion = CH, The in Spanish = EL, Club = C, Old = O, Hotel = H, Hot = H, Northern = N, Base = E, Maiden = M