Synonym: abrupt, hasty, impetuous, impulsive, unexpected, unforeseen. Antonym: gradual. Similar words: all of a sudden, buddy, added, a good deal, a good deal of, deny, dense, denial. Meaning: ['sʌdn] 
adj. happening without warning or in a short space of time.
adj. happening without warning or in a short space of time. 
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211. Be on the watch for a sudden change in the patient's condition.
212. He had a sudden outburst against the whole tribe of actors.
213. The blow was so sudden and vicious that he dropped to his knees.
214. He had a sudden sinking feeling in the pit of his stomach.
215. I was sitting quietly reading when all of a sudden a stone came hurling through the window.
216. The sudden sound of footsteps in silence made her blood run cold.
217. She felt a sudden stab of pain in the chest.
218. His sudden change of heart left Brenda unsure once more.
219. There was a sudden spurt of activity in the housing market.
220. Her illness was very sudden - she was well yesterday.
221. A sudden gust caught her hat and sent it careering wildly down the road.
222. His heart gave a sudden leap when he saw her.
223. This sudden warmth is bringing all the trees into leaf.
224. Parents should be alert to sudden changes in children's behaviour.
225. All of a sudden a tall old man in a black cloak loomed out of the murk.
226. A sudden rise in oil prices could lead to a breakdown of the economy.
227. He found faith gradually, rather than in a sudden conversion.
228. There was a sudden flurry of interest in the book.
229. He had been the king's favourite, and his sudden fall from grace surprised everyone.
230. Police struggled to control the sudden surge forward by the demonstrators.
231. All of a sudden there was a terrific bang and a flash of smoke.
232. Sudden changes by the government can cause terrible trouble in the housing market.
233. I need some time to think it through - I don't want to make any sudden decisions.
233. Sentencedict.com try its best to collect and build good sentences.
234. His change of mind was recent and sudden, the inference being that someone had persuaded him.
235. Not unnaturally, she was greatly upset by her father's sudden death.
236. Do you know what lies behind her sudden departure for London?
237. A sudden surge in the current made the lights fuse.
238. They tried to beat the sudden decrease in land values.
239. His move to the left was not a sudden leap but a natural working out of ideas.
240. We roused up from sleep when the train stopped all of a sudden.
More similar words: all of a sudden, buddy, added, a good deal, a good deal of, deny, dense, denial, wooden, evident, student, density, incident, identify, resident, evidence, tendency, identity, president, diffident, identical, residence, dependent, confident, presidency, by accident, respondent, residential, schadenfreude, presidential.