Face it — sometimes you must give your readers a countenance-based clue about what a character or a subject is feeling. First try conveying emotions indirectly or through dialogue, but if you must fall back on a descriptive term, try for precision:
1. Absent: preoccupied
2. Agonized: as if in pain or tormented
3. Alluring: attractive, in the sense of arousing desire
4. Appealing: attractive, in the sense of encouraging goodwill and/or interest
5. Beatific: see blissful
6. Bilious: ill-natured
7. Black: angry or sad, or see hostile
8. Bleak: see grim and hopeless
9. Blinking: surprise, or lack of concern
10. Blissful: showing a state of happiness or divine contentment
11. Blithe: carefree, lighthearted, or heedlessly indifferent
12. Brooding: see anxious and gloomy
13. Bug eyed: frightened or surprised
14. Chagrined: humiliated or disappointed
15. Cheeky: cocky, insolent
16. Cheerless: sad
17. Choleric: hot-tempered, irate
18. Coy: flirtily playful, or evasive
19. Crestfallen: see despondent
20. Darkly: with depressed or malevolent feelings
21. Deadpan: expressionless, to conceal emotion or heighten humor
22. Dejected: see despondent
23. Derisive: see sardonic
24. Despondent: depressed or discouraged
25. Doleful: sad or afflicted
26. Dour: stern or obstinate; see also despondent
27. Downcast: see despondent
28. Dreamy: distracted by daydreaming or fantasizing
29. Ecstatic: delighted or entranced
30. Etched: see fixed
31. Faint: cowardly, weak, or barely perceptible
32. Fixed: concentrated or immobile
33. Furtive: stealthy
34. Gazing: staring intently
35. Glancing: staring briefly as if curious but evasive
36. Glaring: see hostile
37. Glazed: expressionless due to fatigue or confusion
38. Gloomy: see despondent and sullen
39. Glowering: annoyed or angry
40. Glowing: see radiant
41. Grim: see despondent; also, fatalistic or pessimistic
42. Grave: serious, expressing emotion due to loss or sadness
43. Haunted: frightened, worried, or guilty
44. Hopeless: depressed by a lack of encouragement or optimism
45. Hostile: aggressively angry, intimidating, or resistant
46. Hunted: tense as if worried about pursuit
47. Impassive: see deadpan
48. Inscrutable: mysterious, unreadable
49. Jeering: insulting or mocking
50. Languid: lazy or weak
51. Leering: see meaningful; also, sexually suggestive
52. Meaningful: to convey an implicit connotation or shared secret
53. Mild: easygoing
54. Mischievous: annoyingly or maliciously playful
55. Moody: see sullen
56. Pained: affected with discomfort or pain
57. Pallid: see wan
58. Peering: with curiosity or suspicion
59. Peeved: annoyed
60. Petulant: see cheeky and peeved
61. Pitying: sympathetic
62. Pleading: seeking apology or assistance
63. Pouting: see sullen
64. Quizzical: questioning or confused
65. Radiant: bright, happy
66. Roguish: see mischievous
67. Sanguine: bloodthirsty, confident
68. Sardonic: mocking
69. Scornful: contemptuous or mocking
70. Scowling: displeased or threatening
71. Searching: curious or suspicious
72. Set: see fixed
73. Shamefaced: ashamed or bashful
74. Slack-jawed: dumbfounded or surprised
75. Sly: cunning; see also furtive and mischievous
76. Snarling: surly
77. Sneering: see scornful
78. Somber: see grave
79. Sour: unpleasant
80. Stolid: inexpressive
81. Straight-faced: see deadpan
82. Sulky: see sullen
83. Sullen: resentful
84. Taunting: see jeering
85. Taut: high-strung
86. Tense: see taut
87. Tight: see pained and taut
88. Unblinking: see fixed
89. Vacant: blank or stupid looking
90. Veiled: see inscrutable
91. Wan: pale, sickly; see also faint
92. Wary: cautious or cunning
93. Wide eyed: frightened or surprised
94. Wild eyed: excited, frightened, or stressful
95. Wistful: yearning or sadly thoughtful
96. Withering: devastating; see also wrathful
97. Woeful: full of grief or lamentation
98. Wolfish: see leering and mischievous
99. Wrathful: indignant or vengeful
100. Wry: twisted or crooked to express cleverness or a dark or ironic feeling
2. Agonized: as if in pain or tormented
3. Alluring: attractive, in the sense of arousing desire
4. Appealing: attractive, in the sense of encouraging goodwill and/or interest
5. Beatific: see blissful
6. Bilious: ill-natured
7. Black: angry or sad, or see hostile
8. Bleak: see grim and hopeless
9. Blinking: surprise, or lack of concern
10. Blissful: showing a state of happiness or divine contentment
11. Blithe: carefree, lighthearted, or heedlessly indifferent
12. Brooding: see anxious and gloomy
13. Bug eyed: frightened or surprised
14. Chagrined: humiliated or disappointed
15. Cheeky: cocky, insolent
16. Cheerless: sad
17. Choleric: hot-tempered, irate
18. Coy: flirtily playful, or evasive
19. Crestfallen: see despondent
20. Darkly: with depressed or malevolent feelings
21. Deadpan: expressionless, to conceal emotion or heighten humor
22. Dejected: see despondent
23. Derisive: see sardonic
24. Despondent: depressed or discouraged
25. Doleful: sad or afflicted
26. Dour: stern or obstinate; see also despondent
27. Downcast: see despondent
28. Dreamy: distracted by daydreaming or fantasizing
29. Ecstatic: delighted or entranced
30. Etched: see fixed
31. Faint: cowardly, weak, or barely perceptible
32. Fixed: concentrated or immobile
33. Furtive: stealthy
34. Gazing: staring intently
35. Glancing: staring briefly as if curious but evasive
36. Glaring: see hostile
37. Glazed: expressionless due to fatigue or confusion
38. Gloomy: see despondent and sullen
39. Glowering: annoyed or angry
40. Glowing: see radiant
41. Grim: see despondent; also, fatalistic or pessimistic
42. Grave: serious, expressing emotion due to loss or sadness
43. Haunted: frightened, worried, or guilty
44. Hopeless: depressed by a lack of encouragement or optimism
45. Hostile: aggressively angry, intimidating, or resistant
46. Hunted: tense as if worried about pursuit
47. Impassive: see deadpan
48. Inscrutable: mysterious, unreadable
49. Jeering: insulting or mocking
50. Languid: lazy or weak
51. Leering: see meaningful; also, sexually suggestive
52. Meaningful: to convey an implicit connotation or shared secret
53. Mild: easygoing
54. Mischievous: annoyingly or maliciously playful
55. Moody: see sullen
56. Pained: affected with discomfort or pain
57. Pallid: see wan
58. Peering: with curiosity or suspicion
59. Peeved: annoyed
60. Petulant: see cheeky and peeved
61. Pitying: sympathetic
62. Pleading: seeking apology or assistance
63. Pouting: see sullen
64. Quizzical: questioning or confused
65. Radiant: bright, happy
66. Roguish: see mischievous
67. Sanguine: bloodthirsty, confident
68. Sardonic: mocking
69. Scornful: contemptuous or mocking
70. Scowling: displeased or threatening
71. Searching: curious or suspicious
72. Set: see fixed
73. Shamefaced: ashamed or bashful
74. Slack-jawed: dumbfounded or surprised
75. Sly: cunning; see also furtive and mischievous
76. Snarling: surly
77. Sneering: see scornful
78. Somber: see grave
79. Sour: unpleasant
80. Stolid: inexpressive
81. Straight-faced: see deadpan
82. Sulky: see sullen
83. Sullen: resentful
84. Taunting: see jeering
85. Taut: high-strung
86. Tense: see taut
87. Tight: see pained and taut
88. Unblinking: see fixed
89. Vacant: blank or stupid looking
90. Veiled: see inscrutable
91. Wan: pale, sickly; see also faint
92. Wary: cautious or cunning
93. Wide eyed: frightened or surprised
94. Wild eyed: excited, frightened, or stressful
95. Wistful: yearning or sadly thoughtful
96. Withering: devastating; see also wrathful
97. Woeful: full of grief or lamentation
98. Wolfish: see leering and mischievous
99. Wrathful: indignant or vengeful
100. Wry: twisted or crooked to express cleverness or a dark or ironic feeling
