Expanding your vocabulary is one of the best ways to improve your English communication skills. While the word “difficult” is commonly used to describe something challenging, repeating the same word too often can make your writing and speech sound repetitive.

Fortunately, there are many other ways to say difficult in English. Depending on the context, you can choose more formal, informal, academic, or descriptive alternatives. Learning these synonyms will help you speak and write more naturally while making your English more expressive and precise.

In this guide, you’ll discover 120 synonyms for “difficult”, grouped by meaning and usage.

Common Ways to Say Difficult

These are some of the most common alternatives used in everyday English:

• Hard
• Tough
• Challenging
• Complicated
• Tricky
• Complex
• Problematic
• Demanding
• Daunting
• Confusing
• Testing
• Frustrating
• Puzzling
• Burdensome
• Trying
• Rigorous
• Grueling
• Exhausting
• Formidable
• Intricate

Formal Synonyms for Difficult

These words are suitable for academic writing, business communication, and professional settings.

1. Arduous
2. Demanding
3. Complex
4. Formidable
5. Onerous
6. Laborious
7. Rigorous
8. Taxing
9. Grueling
10. Intricate
11. Sophisticated
12. Cumbersome
13. Convoluted
14. Overcomplicated
15. Unwieldy
16. Exhausting
17. Problematic
18. Burdensome
19. Strenuous
20. Heavy

Examples

• Completing the project proved to be an arduous task.
• The legal process was extremely complex.
• Climbing the mountain was physically strenuous.

Informal Ways to Say Difficult

These expressions are common in conversations and casual English.

• Tough
• Hard
• Tricky
• Sticky
• Hard-going
• A hassle
• A pain
• Tough to crack
• Hard to deal with
• Hard to figure out
• Tough to manage
• Hard to control
• Difficult to tackle
• Challenging to handle
• Hard to understand

Examples

• This math problem is really tough.
• Moving to a new city can be hard.
• That software is a pain to use.

Synonyms for Difficult Tasks

When describing work, assignments, or activities, these words can be useful:

• Demanding
• Arduous
• Laborious
• Time-consuming
• Exhausting
• Grueling
• Strenuous
• Challenging
• Complicated
• Testing

Examples

• Preparing for the exam was demanding.
• Building the house was a laborious process.
• The assignment was extremely time-consuming.

Synonyms for Difficult Problems

These words are useful when talking about puzzles, issues, or complicated situations.

• Complicated
• Complex
• Intricate
• Knotty
• Thorny
• Perplexing
• Baffling
• Confusing
• Mind-boggling
• Obscure

Examples

• Climate change is a complex issue.
• The detective faced a knotty mystery.
• The instructions were completely baffling.

120 Different Ways to Say Difficult

A–Z List

1. Hard
2. Tough
3. Challenging
4. Complicated
5. Arduous
6. Demanding
7. Tricky
8. Problematic
9. Complex
10. Daunting
11. Confusing
12. Strenuous
13. Laborious
14. Knotty
15. Overwhelming
16. Testing
17. Frustrating
18. Puzzling
19. Thorny
20. Burdensome
21. Heavy
22. Trying
23. Rigorous
24. Grueling
25. Intricate
26. Perplexing
27. Sophisticated
28. Exhausting
29. Dismaying
30. Sticky
31. Taxing
32. Harsh
33. Unwieldy
34. Maddening
35. Confounded
36. Formidable
37. Disheartening
38. Baffling
39. Uncertain
40. Exasperating
41. Convoluted
42. Distressing
43. Overcomplicated
44. Unnerving
45. Stressful
46. Mind-boggling
47. Labor-intensive
48. Cumbersome
49. Onerous
50. Troublesome
51. Challenging to understand
52. Hard to grasp
53. Hard to manage
54. Hard to handle
55. Difficult to solve
56. Difficult to overcome
57. Tough to crack
58. Hard-going
59. Difficult to tackle
60. Difficult to execute
61. Difficult to negotiate
62. Difficult to control
63. Difficult to comprehend
64. Difficult to address
65. Difficult to articulate
66. Complex to resolve
67. Complex to tackle
68. Complicated to understand
69. Complicated to deal with
70. Complicated to achieve
71. Hard to approach
72. Hard to influence
73. Hard to rectify
74. Hard to figure out
75. Hard to come by
76. Tough to deal with
77. Tough to manage
78. Tricky to handle
79. Tricky to solve
80. Unmanageable
81. Obscure
82. Trying one’s patience
83. Testing one’s skill
84. Testing one’s knowledge
85. Testing one’s endurance
86. Demanding of concentration
87. Demanding of effort
88. Demanding of focus
89. Challenging to navigate
90. Challenging to accomplish
91. Challenging to master
92. Challenging to address
93. Frustratingly complex
94. Intricate to solve
95. Laborious to manage
96. Confusing to resolve
97. Compounding
98. Unclear
99. Unsettling
100. Hard-fought
101. Sophisticated
102. Disturbing
103. Severe
104. Pressing
105. Intense
106. Weighty
107. Exacting
108. Fierce
109. Herculean
110. Monumental
111. Dauntingly complex
112. Problem-filled
113. Hazardous
114. Demanding physically
115. Demanding mentally
116. High-pressure
117. Overbearing
118. Tedious
119. Painstaking
120. Challenging by nature

Example Sentences

Instead of:

The exam was difficult.

You can say:

• The exam was challenging.
• The exam was tough.
• The exam was demanding.
• The exam was arduous.
• The exam was complex.

Instead of:

Life can be difficult.

You can say:

• Life can be challenging.
• Life can be tough.
• Life can be trying.
• Life can be stressful.
• Life can be overwhelming.

Frequently Asked Questions

What are some simple alternatives to “difficult”?

Some easy synonyms include:

• Hard
• Tough
• Challenging
• Tricky
• Complicated

What is a formal word for “difficult”?

Formal alternatives include:

• Arduous
• Formidable
• Onerous
• Grueling
• Complex
• Rigorous

Can “hard” and “difficult” be used interchangeably?

Yes. In many situations, hard and difficult have similar meanings. However, hard is generally more common in everyday conversations, while difficult sounds slightly more formal.

What are some informal ways to say difficult?

Informal alternatives include:

• Tough
• Tricky
• A hassle
• A pain
• Hard-going

Which word should I use in academic writing?

For formal and academic contexts, words such as complex, arduous, formidable, rigorous, and demanding are excellent choices.

Final Thoughts

Learning different ways to say difficult can greatly improve your English vocabulary and communication skills. Whether you’re writing essays, speaking professionally, or having casual conversations, using a variety of synonyms will make your English sound more natural and engaging.

The next time you want to use the word “difficult,” try one of these 120 alternatives and add more variety to your language.