Synonym: complicated, difficult, durable, firm, hard, hardy, obscure, strong, sturdy, unclear, vague. Antonym: tender. Similar words: toughness, dough, though, enough, through, drought, ought to, roughly. Meaning: [tʌf] 
n. 1. someone who learned to fight in the streets rather than being formally trained in the sport of boxing 2. an aggressive and violent young criminal 3. a cruel and brutal fellow. adj. 1. not given to gentleness or sentimentality 2. very difficult; severely testing stamina or resolution 3. physically toughened 4. substantially made or constructed 5. violent and lawless 6. feeling physical discomfort or pain (`tough' is occasionally used colloquially for `bad') 7. resistant to cutting or chewing 8. unfortunate or hard to bear 9. making great mental demands; hard to comprehend or solve or believe.
n. 1. someone who learned to fight in the streets rather than being formally trained in the sport of boxing 2. an aggressive and violent young criminal 3. a cruel and brutal fellow. adj. 1. not given to gentleness or sentimentality 2. very difficult; severely testing stamina or resolution 3. physically toughened 4. substantially made or constructed 5. violent and lawless 6. feeling physical discomfort or pain (`tough' is occasionally used colloquially for `bad') 7. resistant to cutting or chewing 8. unfortunate or hard to bear 9. making great mental demands; hard to comprehend or solve or believe. 
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61. Politicians are trying to appear tough on crime .
62. She has cultivated an image as a tough negotiator.
63. My mother was very tough on my sister.
64. She doesn't seem cut out for this tough neighbourhood.
65. Surviving tough times can really deepen your relationship.
66. The new democracies face tough challenges.
67. He's not tough enough for a career in sales.
68. Julia was a very tough, sharp-tongued woman.
69. The President is talking tough on crime.
70. The government has promised to get tough on crime.
71. We will not back away from tough measures.
72. We'll face a tough fight in the upcoming election.
73. You didn't get the job? Oh, tough luck!
74. The meat is too tough to eat.
75. It's tough finding a job these days.
76. It's a tough/not an easy proposition.
77. He has a reputation for being tough and uncompromising.
78. We've had to make some very tough decisions.
79. Tough decisions will have to be made.
80. The reptile's skin is tough and scaly.
81. The meat was tough and hard to chew.
82. We had to get tough with him.
83. She is bright, tough and spunky.
83. Sentencedict.com try its best to collect and build good sentences.
84. Many homeless people are facing a tough winter.
85. She was a tough, no-nonsense leader.
86. You have to be tough with these young thugs.
87. It's time to get tough with drunk drivers.
88. The school takes a very tough line on drugs.
89. The writing is brutally tough and savagely humorous.
90. He had a tough tanned face and clear eyes.
More similar words: toughness, dough, though, enough, through, drought, ought to, roughly, a thought, as though, thorough, although, go through, all through, throughout, get through, even though, run through, fall through, put through, cut through, thoroughly, come through, look through, pull through, pass through, carry through, break through, deep in thought, follow through.