Ordered by uses in the last three years (since 2023-11-02), then by uses across the whole archive.

1. AnswerLast 3 yearsAll time
2. 1
   IRAN

   15A Home of about 10% of the world's oil reserves

   22
   276
3. 2
   SEW

   14D Baste, e.g.

   20
   169
4. 3
   SLAP

   5D Sharp rebuff

   17
   123
5. 4
   TAD

   53D Shade

   16
   169
6. 5
   CON

   27D Flimflammer

   15
   123
7. 6
   DEM

   19A Party person, briefly

   15
   93
8. 7
   DAD

   50A ___ jokes

   14
   144
9. 8
   GNU

   28D Old World grazer

   13
   127
10. 9
    IRULE

    10D "Winner winner chicken dinner!"

    12
    28
11. 10
    RILE

    49D Tick off

    10
    130
12. 11
    IDOS

    22A Pair at the altar

    10
    78
13. 12
    NUDE

    18A Lipstick shade

    8
    92
14. 13
    GILA

    28A ___ monster

    8
    55
15. 14
    TINT

    37D Shade

    7
    86
16. 15
    TAJ

    37A Opening for a Mughal masterwork

    6
    81
17. 16
    OLDEN

    34A Like bygone days

    6
    43
18. 17
    KNEES

    12D Mini/midi midpoint

    6
    40
19. 18
    COBS

    48D Cookout discards

    5
    27
20. 19
    GERE

    45A "Arbitrage" star, 2012

    4
    96
21. 20
    PAP

    4D It's not hard to swallow

    4
    58
22. 21
    NADIR

    11D Things can only get better from here

    4
    49
23. 22
    YOW

    36A "That stings!"

    3
    26
24. 23
    GIL

    24A Self-described "bluesologist" ___ Scott-Heron

    2
    56
25. 24
    CROAT

    51A Dalmatian, for one

    2
    28
26. 25
    UMBRA

    54A Shaded area

    2
    24
27. 26
    PASTS

    56A Checkered things

    2
    15
28. 27
    INTERS

    25A Gets in deep?

    2
    13
29. 28
    IRMA

    47D ___ Thomas, the Soul Queen of New Orleans

    1
    104
30. 29
    SERFS

    44D Lord's workers

    1
    40
31. 30
    SNITS

    42A Huffs

    1
    32
32. 31
    DECAL

    8D Stick-on

    1
    26
33. 32
    KCUP

    46D Single-serve coffee holder

    1
    7
34. 33
    KICKSTARTER

    46A Site of many pitches

    1
    5
35. 34
    LINDROS

    43A Canadian hockey great Eric

    1
    4
36. 35
    PONIEDUP

    31D Settled a debt, informally

    1
    4
37. 36
    STINTS

    38A Husbands one's resources

    0
    17
38. 37
    WINK

    9A Indicator of interest on Match.com

    0
    15
39. 38
    EARFLAP

    55A Deerstalker feature

    0
    11
40. 39
    OKAPIS

    7D So-called "African unicorns"

    0
    11
41. 40
    VISTAS

    40D Things that get overlooked?

    0
    11
42. 41
    DOTARD

    41D Senile sort

    0
    9
43. 42
    ENLISTS

    21D Joins up

    0
    9
44. 43
    MESSED

    33D Tinkered (with)

    0
    9
45. 44
    SLIPSHOD

    1A Careless

    0
    9
46. 45
    TIEDON

    29A Attached, as a hook

    0
    9
47. 46
    HALOGEN

    6D Chlorine, for one

    0
    5
48. 47
    SHIITES

    17D Majority of 15-Across

    0
    5
49. 48
    IVEMOVEDON

    3D Post-breakup declaration

    0
    4
50. 49
    NOVICES

    26A Green people

    0
    3
51. 50
    POPAWHEELIE

    20A Do some showing off with one's bike

    0
    3
52. 51
    ANTISPAM debut

    30A Preventing cyberclutter

    0
    2
53. 52
    ANTTRAP

    32D Contraption that might have honey and borax

    0
    2
54. 53
    BADDATES

    35D "Emergency calls" may save you from them

    0
    2
55. 54
    ICEPALACES

    16A Winter carnival spectacles

    0
    2
56. 55
    LAVALAKES debut

    13A Some naturally heated pools

    0
    2
57. 56
    NAVIDAD

    39A Noel abroad

    0
    2
58. 57
    SLIDINTO debut

    1D Reached feetfirst

    0
    2
59. 58
    ALJARREAU debut

    30D R&B/soul singer with the 1981 hit album "Breakin' Away"

    0
    1
60. 59
    BLUESTONE debut

    35A Relative of slate

    0
    1
61. 60
    LACEDOILY debut

    2D Part of a fancy place setting

    0
    1
62. 61
    SIDEWALKART debut

    23D Pieces of chalk?

    0
    1
63. 62
    SUDSED debut

    57A Got in a lather

    0
    1
64. 63
    TEARITUP debut

    52A Show some moves on the dance floor

    0
    1
65. 64
    WINETASTING debut

    9D Leisure activity for which you need glasses

    0
    1