Thanks to Anitya for making it short, concise and easy. Thanks to everyone for yesterday's 'get well soon' wishes, I'm fighting fit again.
ACROSS
7 Ecstasy absent in leading lady's smack (6) HEROIN HEROIN
8 Boy preparing for war is frightful (8) ALARMING {AL}{ARMING}
9 Follow male — a jerk — asserting positively (8) DOGMATIC {DOG}{M}{A}{TIC} I'm reminded of
10 Entertained a master — nothing new (6) AMUSED {A}{M}{USED}
11 Meal-taker eats a starter (8) LAUNCHER {L{A}UNCHER}
12 Popular child gets nothing completely (2,4) IN TOTO {IN} {TOT}{O]
13 Cruel men cane colt in hiding (11) CONCEALMENT*
18 A silly fellow returns small sponges (6) LOOFAS {LOOF}{A}<={S}
20 Mark NASA's strange greeting (8) NAMASKAR*
22 Section in SA for old Greek city (6) SPARTA {S{PART}A}
23 One stretches former care-giver (8) EXTENDER {EX}{TENDER}
24 Standard tirade is gross (8) FLAGRANT {FLAG}{RANT} This was glaringly offensive just yesterday!
25 To make certain, run and see around (6) ENSURE*
DOWN
1 Fellow adores silly hats (7) FEDORAS {F}{ADORES*}
2 Soldier's call: “Order” (8) COMMANDO {COMMAND}{O}
3 Bit from small, awful chant (6) SNATCH {S}{CHANT*}
4 Resignation of obese boy's mother (8) FATALISM {FAT}{ALI'S}{M}
5 A horse's bulk (6) AMOUNT {A}{MOUNT}
6 Intends to change orders (7) INDENTS*
8 Finding when some people begin tempting (13) ASCERTAINMENT {AS}{CERTAIN}{MEN}{T
14 Accountant and saint gone missing (8) CASTAWAY {CA}{ST}{AWAY}
15 Curiosity of one not taking part in clamour (8) NOSINESS NO
16 Put together comrade's hoard (7) COMPILE {COM}{PILE}
17 Progresses rapidly in courses (7) CAREERS [DD]
19 Dig for a long time (6) FORAGE {FOR}{AGE}
21 She's very many, not all the same (6) MOTHER {M}{OTHER}