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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211. It's going to be tough but we'll pull through it together.
212. I don't really fancy their chances against such tough opposition.
213. He is dreadfully tough.
214. He is known for taking a tough line on security.
215. He's got an instinct for survival in a tough job.
216. Having to stay indoors all day is tough on a kid.
217. The government is taking a tough line on drug abuse.
218. You'll need some fairly tough footwear to go walking up mountains.
219. It's tough for a woman to get ahead in politics.
220. It's tough being a reporter. For openers, there are the long hours.
220. Sentencedict.com try its best to gather and make good sentences.
221. The minister faced a tough grilling at today's press conference.
222. She's a tough nut to crack ; I don't think she'll give us permission.
223. It was a tough call , but we had to cancel the game because of the weather.
224. The soldiers were under the command of a tough sergeant-major.
225. These firms have been given a tough lesson in the need to diversify their markets.
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.