Christmas crossword: Organic Message

Down clues and entries are normal. Across clues have normal definitions but wordplays that omit a single letter from each answer, whose enumeration is given, and whose reduced form must be entered in the grid. Read in clue order, omitted letters spell out an Organic Message.

Download a printable version here.

Across

1               Mistress fixed this South African town (9)

7               Architect cycles to revive (5)

10            Allure of extremely adept discretion (7)

14            Worry bully, humiliate oneself (3,4)

16            Prepared study (5)

17            Escort gold checker briefly (8)

18            Rebuke solver after identical working (5,2,3)

19            Garnish good oatmeal rolls (9)

21            Somehow rids Co-op of arachnids? (9)

22            Fuss follows grand old wow (5)

23            Serf’s male, see (5)

25            WW2 Soviet spies run in session (6)

26            Maybe IKEA again gets new lines (9)

27            Grinding European ramble round Italy (7)

29            Rapid way NATO hub adapted (8)

30            Cry about skinned baby animal that has little fat (6,5)

33            Narrowing drill cuts weight (7)

37            Warnings help previously mentioned (9)

38            Rite amended in article, books and ordinal (10)

40            Line in black in demand (7)

43            Noble heart of hero diver (7)

44            Substitute for table left on deck? (3-5)

45            Frisky horse nabbing one’s socks, etc. (7)

47            Leaner ground from swamp near Argos (7)

50            Judas probes info setter’s able to produce (10)

54            Metal bar breaks fishing net (4,5)

57            Important women’s cardinal (7)

58            Daft peer and knight didn’t rely on each other (11)

60            Iran shut display operating between high levels (3-2-3)

65            Destroy smut on senior cop (7)

67            Eager desire to eat evening meal in NZ? (9)

68            Vigour, say, in eastern US State (6)

70            Pronoun Seth altered (5)

71            Religion Hebridean island snubbed (5)

72            Screenwriter track includes Gershwin backing (9)

73            Earthy rocks in ‘uneven’ hole having no roof (9)

74            Tape barely held by glue on small clock part (10)

75            Protein’s gone all funny (8)

76            Snap old lace knot (5)

77            My university banks in northern port (7)

78            Contaminate vote EU brought about (7)

79            Heartlessly cheat Caledonian exchange (5)

80            Random act regularly ruins ours at first (9)

Down

1               Miss fool breaking invention (6)

2               Toucan in Maraca River (7)

3               Journalist upset, gloomy about population theory? (8)

4               Cocked up snooker shots ended break (8)

5               Playful youth is primarily into twaddle (6)

6               Palm extended twice in audition (3-3)

7               Meal’s free, unlimited, finished! (6)

8               Adrift, due ashore in Iron Age spot (4-5)

9               Tired by misery, poor widower wavered off and on (3-7)

10            County that’s awful crosses Morocco (6)

11            TV model lost messaging capability? (8)

12            Weakened elbow a bat injured (2,1,3,3)

13            Riddle about case of lone clothworker (8)

15            Active mineral lifted on aircraft (4)

20            Bullfighter raged having run out (6)

24            Liberal centre reforms on which reader’s view is slanted? (7)

28            African province once hiding age of babies (8)

30            Some visited location (4)

31            Composer’s tone Tim trashed (7)

32            Waste product found in dead poet (8)

34            Everybody starts to object about Scottish town (5)

35            Those Scots scoff about hotel breaks (4)

36            Melrose partly raised a number of small charges? (4)

39            English in lively chat show (5)

40            Ragged mum right to move in circles (7)

41            It’s a stuck up wine (4)

42            Bulgarian money with variable tax (4)

44            Rank place supported by occupant (10)

46            Grass animal’s served up (4)

48            Source involving adult male will cause trouble (5,4)

49            Inlaid fancy items with pace (9)

51            Trashy store in prison stocking comics (8)

52            Catch hollow tinny sound (6)

53            Ultimately, animals at large roaming wild (8)

55            Feudal lord’s portent about Spain, Europe (8)

56            Rubber rope fails when bitten by goose (8)

59            Candidate one fights about pit (7)

61            Disheartened job-leaver slightly damaged paper (6)

62            Enclose unopened tin (jam) (6)

63            Argue betrayal should not commence (6)

64            King in myth discharged Orkney clan abroad (6)

66            Due three times, cast expressed disapproval...