Synonym: at one time, erst, erstwhile, formerly, in one case, one time. Similar words: at once, concede, concert, concern, concept, all at once, conceive, once more. Meaning: [wʌns] 
adv. 1. on one occasion 2. as soon as 3. at a previous time.
adv. 1. on one occasion 2. as soon as 3. at a previous time. 
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91. Once destroyed, brain cells do not regenerate.
92. Once in a while we eat out.
93. We go to the cinema about once a week.
94. Once he starts nattering you just can't stop him.
95. Once you deduct your expenses, there is nothing left.
96. We ought to start at once.
97. They received orders to start at once.
98. Once I've done that, it's a piece of cake.
99. Scarlett was crowned Sexiest Woman Alive once again.
100. His sister gave him a manicure once a month.
101. The place at once enraptured me.
102. Mr. Lincoln once described this journey to me.
103. She wanted to laugh and weep all at once.
104. She only sees her parents once every six months.
105. The consultant committee meet once a year.
106. Why did he do that experiment once again?
107. Unless you go at once you will be late.
108. please hand your homework in at once.
109. Never regret something that once made you smile.
110. Exfoliate your back at least once a week.
111. We meet regularly(sentencedict.com), once a month.
111. Sentencedict.com try its best to gather and build good sentences.
112. The magazine publishes a quiz once a month.
113. A computer can perform many tasks at once.
114. Come here at once, you little monkey!
115. Once in a while we had a major blowout.
116. They all started talking at once.
117. Education was once the prerogative of the elite.
118. Once again he had to readjust to living alone.
119. I've been there more than once.
120. London was once famous for its fogs.
More similar words: at once, concede, concert, concern, concept, all at once, conceive, once more, conception, concerning, concentrate, once in a while, concentration, once upon a time, concentrating, concrete, conclude, on credit, conclusion, conciliatory, since, hence, fence, cancel, cancer, dancer, stance, glance, chance, bounce.