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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61. With him, you should always expect the unexpected.
62. Help came from a wholly unexpected direction.
63. She found she had reservoirs of unexpected strength.
64. Matters took an unexpected turn.
65. Matters have taken an unexpected turn.
66. His unexpected failure punctured his self-importance.
67. Unless something unexpected happens, I'll see you tomorrow.
68. Police officers must be prepared for the unexpected.
69. The unexpected news baffled me.
70. Joan blushed at the unexpected compliment.
71. This was a sudden and unexpected blow.
72. Her death was totally unexpected .
73. The unexpected news fairly knocked him back.
74. He was discomfited by the unexpected questions.Sentence dictionary
75. He discovered unexpected reserves of strength.
76. Initial failure was followed by unexpected, if modest, success.
77. He made a brief, unexpected appearance at the office.
78. The unexpected news knocked me out.
79. The timing of the announcement was rather unexpected.
80. Help came from an unexpected quarter.
81. The unexpected news fairly knocked me over.
82. Lynn laughed(sentencedict.com), blinking back unexpected tears.
83. His unexpected arrival threw us into total confusion.
84. Support came from an unexpected direction.
85. Support for the plan came from an unexpected quarter.
86. His death was not entirely unexpected.
87. We've planned it down to the last detail-we don't want any unexpected hiccups.
88. His promotion was unexpected.
89. There are several unexpected twists in the plot before the murderer is revealed.
90. You'd better take along a first-aid kit to cope with unexpected catastrophes.
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.