ACROSS
1 Snow job getting more even by day's end (8) FLATTERY {FLATTER}{
5 Language spooks assume ban will be revoked (6) ARABIC {CI{BAR}A}<=
10 Noble except once, perhaps? (7) BARONET {BAR}{ONE}{T}
11 Puts off, time to hog all the attention (7) UPSTAGE {PUTS}*{AGE}
12 It's part of the hall, an airy annexe (5) LANAI [T]
13 Attack is bad (9) OFFENSIVE [DD]
14 An increase in admiration (12) APPRECIATION [DD]
18 Carrying around a snack, can say how old it is (6,6) CARBON DATING {CAR{BON DA}TING}
21 Unfulfilled desire to study, it's wrong place in the US (9) WISCONSIN {WIS
23 Often one doesn't like it as a pet (5) PEEVE [CD]
24 Guess it's OK to bring in wise men, no force to be used (7) IMAGINE {
25 Religious claim is suspect (7) ISLAMIC*
26 Man, the horse amounts to almost nothing (6) GEEZER {GEE}{ZER
27 One on one, I’m mostly cordial (8)
DOWN
1 Story to emulate is essentially below the knee (6) FIBULA {FIB}{
2 Order wife to leave — it’s complete (6) ARRANT
3 May be sent in, for he is no amateur on court (6,3) TENNIS PRO {SENT+IN}* {PRO}
4 May be dogs and cats will pull you back a bit (10,4) RETROGRADE STEP {PETS}* [RA]
6 Leave your job? No good, you should stick with it (5) RESIN RESI
7 Harry is a Libra! Capital! (8) BRASILIA*
8 Brave, revolutionary urge to listen (8) CHEYENNE {CHE}{YENNE}(~yen)
9 Water has a property to rise causing disquiet (7,7) SURFACE TENSION {SURFACE} {TENSION}
15 Crusader against corruption radioed cops in the state capital (9) ANNAPOLIS {ANNA}{POLIS}(~police)
16 Writing's become extremely sporadic — Author's looking worried (8) SCOWLING {-r+s(
17 Time to support Don for the event (8) DRESSAGE {DRESS}{AGE}
19 She takes boy up, he's a loner (6) HERMIT {HER}{TIM<=}
20 Prompt to follow others, mostly to save (6) RESCUE {RES
22 Fruit started ripening — he wanted another helping (5) OLIVE OLIVE
GRID