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ACROSS
1 Say, Lily's working to acquire new apparatus to disperse crowds (5,6) WATER CANNON {WATER CAN}{ON} over {N}
7 Trap bachelor with girl (3) BAG {BA}{G}
9 Setback after Republican's order had repetitions (5) ROTES {SET<=}<=>{R}{O}
10 Careless guru dead, ingesting some nightshade carelessly (9) UNGUARDED {GURU+DEAD}* over {Ni...e}
11 Brigadier designs a delivery mechanism (3,6) AIR BRIDGE*
12 Tremulous sound from other end of boat on stream (5) TRILL {boaT}{RILL}
15 Course beginners in Tamil indicate difficulty & ennui (4) TIDE Acrostic
18 Victim, a mother saved by a religious leader (4) IMAM [T]
20 Short lady initially cried on everyone's hate (7) MISCALL {MISs}{Cr..d}{ALL}
23 Central forecast on regulation (5) EDICT prEDICTed
27 Falls for medico at work, over heels ultimately (5) DROPS {DR}{OP}{h..lS}
28 Carpet is 50% bumpy (3) RUG RUGged
29 One who repeats and reinforces opinions of coach Herb and me in a bad way (4,7) ECHO CHAMBER {COACH{HERB+ME}*
DOWN
1 Victory celebration at area and shortly at both sides of college (3,5) WAR DANCE {WARD}{ANd}{Co...gE}
2 Coaching for test covers university model only (8) TUTORIAL {T{U}{T}{O}RIAL}
3 A vertical pipe at the floor corner is interred in the middle (5) RISER {f..oR}{IS}{intERred}
4 When in Paris, one doctor inserted tip of needle in parts (7) ASUNDER {AS}{UN}{D{n...lE}R}
5 Overlook end of the session, say 7-part lecture ending after 4th (7) NEGLECT {s...oN}{EG}{LECTure}
6 Wave patterns occurring twice a month, when sea in depth almost gets choppy (4,5) NEAP TIDES {SEA+IN+DEPTh}*
14 ...I met in board programme (9) TIMETABLE {T{I}{MET}ABLE}
16 Auditor and doctor buy a snack underground, perhaps (8) CATACOMB {CA}{TACO}{MB}
17 Charlie prefers regularly procuring Pears soap, say (8) CLEANSER {C}{LEANS}{pEaRs}
19 Say, a holistic therapy's dumb, that nearly is silly (3,4) MUD BATH {DUMB+THAt}*
20 Setter's icon making a comeback primarily composing for a musical (7) MELODIC {ME}{IDOL<=}{Co...g}
22 Whacking in disguise (6) HIDING [DD]
Reference List
New = N, Bachelor = BA, Girl = G, Republican = R, Order = O, Lake = L, Work = OP, University = U, Model = T, Only = O, One in Paris = UN, Charlie = C, Church = CE, Right = R


