Synonym: callous, difficult, firm, harsh, inflexible, rigid, rough, rugged, severe, solid, stern, stony, strenuously, strict, tough, ugly, unpleasant, unyielding, easy, simple, soft. Similar words: hardware, hardly any, harsh, chart, a share, sharp, shark, Chart.. Meaning: [hɑrd /hɑːd] 
adj. 1. not easy; requiring great physical or mental effort to accomplish or comprehend or endure 2. dispassionate 3. resisting weight or pressure 4. very strong or vigorous 5. characterized by toilsome effort to the point of exhaustion; especially physical effort 6. produced without vibration of the vocal cords 7. (of light) transmitted directly from a pointed light source 8. (of speech sounds); produced with the back of the tongue raised toward or touching the velum 9. given to excessive indulgence of bodily appetites especially for intoxicating liquors 10. being distilled rather than fermented; having a high alcoholic content 11. unfortunate or hard to bear 12. dried out. adv. 1. with effort or force or vigor 2. with firmness 3. earnestly or intently 4. causing great damage or hardship 5. slowly and with difficulty 6. indulging excessively 7. into a solid condition 8. very near or close in space or time 9. with pain or distress or bitterness 10. to the full extent possible; all the way.
adj. 1. not easy; requiring great physical or mental effort to accomplish or comprehend or endure 2. dispassionate 3. resisting weight or pressure 4. very strong or vigorous 5. characterized by toilsome effort to the point of exhaustion; especially physical effort 6. produced without vibration of the vocal cords 7. (of light) transmitted directly from a pointed light source 8. (of speech sounds); produced with the back of the tongue raised toward or touching the velum 9. given to excessive indulgence of bodily appetites especially for intoxicating liquors 10. being distilled rather than fermented; having a high alcoholic content 11. unfortunate or hard to bear 12. dried out. adv. 1. with effort or force or vigor 2. with firmness 3. earnestly or intently 4. causing great damage or hardship 5. slowly and with difficulty 6. indulging excessively 7. into a solid condition 8. very near or close in space or time 9. with pain or distress or bitterness 10. to the full extent possible; all the way. 
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91. It's hard work teaching a class of lively children.
92. It's hard to pilot a boat in rough waters.
93. The stone is hard to the touch.
94. She worked hard all morning, without distraction.
95. Her hands were rough from hard work.
96. Sometimes reality and fantasy are hard to distinguish.
97. She drove a hard bargain with the seller.
98. They are working hard to produce a program-controlled computer.
99. Push hard when I tell you to.
99. Wish you can benefit from sentencedict.com and make progress everyday!
100. After all that hard work, you deserve a holiday.
101. Thank you for your hard work.
102. Brazil nuts have very hard shells.
103. Work hard; your job is on the line.
104. They were both breathing hard from the steep climb.
105. It's hard to break down old prejudices.
106. Prune the trees hard in the winter.
107. His success was achieved by hard work.
108. It's hard to find the good in someone when you've already found the best in someone else.
109. The bunk mattress was hard, the blankets prickly and slightly damp.
110. After years of hard work, his efforts finally bore fruit.
111. He's tied up with his new book. He's working hard, you know.
112. He was hard put to it to explain her disappearance.
113. Your forever friend gets you through the hard times,the sad times,and the confused times.
114. You'll need to upgrade your hard drive to 4Mb before running this software.
115. His motive for working so hard is that he needs money.
116. Do you understand the feeling of missing someone? It is just like that you will spend a long hard time to turn the icecold water you have drunk into tears.
117. The magnetic pull of the city was hard to resist.
118. In the gathering gloom it was hard to see anythingdistinctly.
119. Don't try so hard,the best things come when you lease expect them to.
120. teacher, if you are a beautiful sky of the sun, we are underground lovely grass, is that you give us new life. Your day and night to help us take care of us, your hard work!