Here are the most common adjectives ending in -ful found in the NOW corpus:
*Note, 60% of them are not included in the English Vocabulary Profile.
The twelve most common adjectives that end with the suffix -ful all have positive meanings:
1 SUCCESSFUL 1589851
2 POWERFUL 1151163
3 BEAUTIFUL 1091675
4 WONDERFUL 595077
5 USEFUL 545881
6 GRATEFUL 439808
7 RESPECTFUL 432870
8 PEACEFUL 412401
9 MEANINGFUL 377815
10 CAREFUL 359182
11 HELPFUL 318192
12 HOPEFUL 287559
13 PAINFUL 257241
14 UNLAWFUL 219238
Interesting that ‘unlawful‘ is more than 3 times more common than ‘lawful.’
This is also the most common unlisted adjective in the EVP.
We call it C2 regardless.
I want to propose that this meeting is unlawful.
15 HARMFUL 213375
16 AWFUL 178704
17 TRUTHFUL 165839
I‘ve tried to be truthful with you.
18 THOUGHTFUL 149557
19 THANKFUL 146755
20 FAITHFUL 130342
21 COLOURFUL 125423
22 INSIGHTFUL 120528
23 STRESSFUL 112896
24 MINDFUL 103568
25 UNSUCCESSFUL 96038
26 COLORFUL 88245
27 HATEFUL 80503
28 LAWFUL 69813
29 FEARFUL 69020
30 SHAMEFUL 68566
31 DELIGHTFUL 67761
32 YOUTHFUL 66663
33 IMPACTFUL 64680
34 PLAYFUL 62683
35 DREADFUL 48577
36 DOUBTFUL 47398
37 DISRESPECTFUL 47107
38 FRUITFUL 46146
39 RIGHTFUL 44470
40 WRONGFUL 42274
41 JOYFUL 42211
42 DISGRACEFUL 38041
43 FATEFUL 37270
44 CHEERFUL 36285
45 WASTEFUL 35286
46 FORCEFUL 34841
47 PLENTIFUL 32622
48 HURTFUL 28692
49 PURPOSEFUL 28300
50 WATCHFUL 27498
51 EVENTFUL 24622
52 SOULFUL 24258
53 MASTERFUL 23569
54 GRACEFUL 23279
55 RESOURCEFUL 22743
56 TEARFUL 21713
57 WOEFUL 19848
58 WISHFUL 19568
59 UNHELPFUL 19100
60 WILLFUL 16709
61 WILFUL 16556
62 SKILFUL 15319
63 NEEDFUL 14790
64 REMORSEFUL 14069
65 FANCIFUL 13911
66 SKILLFUL 12965
67 BLISSFUL 12643
68 DISTASTEFUL 12268
69 VENGEFUL 12129
70 BOUNTIFUL 11610
71 SINFUL 11420
72 PITIFUL 11009
73 ARTFUL 10777
74 FLAVORFUL 10593
75 DECEITFUL 10348
76 TASTEFUL 10177
77 RESENTFUL 10142
78 ALL-POWERFUL 10123
79 UNFAITHFUL 9099
80 MERCIFUL 8809
81 UNGRATEFUL 8744
82 WISTFUL 8676
83 UNEVENTFUL 8556
84 RESTFUL 7362
85 GAINFUL 7036
86 GLEEFUL 7002
87 MOURNFUL 6852
88 DUTIFUL 6665
89 FLAVOURFUL 6654
90 SUSPENSEFUL 6493
91 SPITEFUL 6256
92 HEALTHFUL 5585
93 SORROWFUL 5494
94 REGRETFUL 5373
95 FORGETFUL 5357
96 PRAYERFUL 4736
97 DISTRUSTFUL 4615
98 BOASTFUL 4304
99 TAKAFUL 4127
100 FRIGHTFUL 4059
Listed at C2:
disrespectful, eventful, fearful, forceful, merciful, pitiful, resourceful, tasteful, uneventful