Synonym: accidental, chance, sudden, unforeseen. Antonym: usual. Similar words: expected, expect, selected, expert, expense, expertise, experiment, experience. Meaning: [‚ʌnɪk'spektɪd] 
adj. 1. not expected or anticipated 2. made necessary by an unexpected situation or emergency 3. not planned 4. happening or coming quickly and without warning.
adj. 1. not expected or anticipated 2. made necessary by an unexpected situation or emergency 3. not planned 4. happening or coming quickly and without warning. 
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91. The question was so unexpected that , for a moment , she was at a loss how to act up properly.
92. Try to control your impatience when any unexpected problem arises.
93. Because of recent events, the programme has taken on an unexpected topicality.
94. The senator was clearly caught off balance by the unexpected question.
95. Live interviews add zest and a touch of the unexpected to any piece of research.
96. There's an unexpected twist in/to the plot towards the end of the film.
97. The news was so unexpected that I caught my breath from shock.
98. Scientists follow several well-defined steps in investigating unexpected outbreaks of disease.
99. The country needs a defence capability as insurance against the unexpected.
100. There is a gradual build-up of suspense throughout the film, until it comes to an unexpected ending.
101. They tried to feed me a false line about unexpected extra expenses.
102. Unexpected things can happen in the world of subatomic particles.
103. I always keep some good wine in for unexpected guests.
104. The success of her book has given her unexpected celebrity status.http://sentencedict.com/unexpected.html
105. The storm turned out to be one of unexpected violence.
106. She had an unexpected windfall of a thousand pounds when a cousin died.
107. She was put in a fluster by the unexpected guests.
108. The gesture awoke an unexpected flood of tenderness towards her.
109. His death was totally unexpected and, in consequence, no plans had been made for his replacement.
110. One of the many benefits of foreign travel is learning how to cope with the unexpected.
111. Her career took an unexpected turn when she moved to New York.
112. "You won't get away with this," he said with unexpected bravado.
113. Events took an unexpected turn when her mother suddenly arrived.
114. The unexpected news sent a thrill of anticipation through the group.
115. Well, fancy seeing you here! This really was an unexpected pleasure!
116. Another unexpected event, though of quite a different order, occurred one evening in 1973.
117. The Prince's unexpected recovery was celebrated with a thanksgiving service in St Paul's.
118. There was a frantic rush to get everything ready for the unexpected inspection from the superiors.
119. We are sorry to be late with the goods, but we came up against some unexpected delays.
120. His going was unexpected.
More similar words: expected, expect, selected, expert, expense, expertise, experiment, experience, experienced, expedition, experimental, at the expense of, aspect, suspect, spectrum, prospect, inspector, spectacle, introspect, perspective, inspection, spectacular, respectively, introspection, with respect to, irrespective of, tune, next, immune, tune in.