Synonym: compelling, compulsory, essential, exigent, imperative, important, needed, obligatory, required, urgent. Similar words: incessant, recessive, recession, adversary, essay, anniversary, go to pieces, access. Meaning: ['nesɪsərɪ /-srɪ] 
n. anything indispensable. adj. 1. absolutely essential 2. unavoidably determined by prior circumstances.
n. anything indispensable. adj. 1. absolutely essential 2. unavoidably determined by prior circumstances. 
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91. Dreams are necessary to life. Anais Nin 
92. It is necessary to obtain the patients' consent.
93. It's not necessary to wear a tie.
94. Some restriction on funding was necessary.
95. It was agreed that another meeting was necessary. Sentencedict.com
96. They has possessed themselves of all the necessary material.
97. A clearly quantifiable measure of quality is not necessary.
98. The regulations allow the use of force if necessary.
99. Falling profits made it necessary to restructure the business.
100. Is it really necessary to conduct experiments on animals?
101. Daily insulin injections are necessary for some diabetics.
102. Is war a necessary evil in this world?
103. Investment is a necessary condition of economic growth.
104. Sometimes it is necessary to say no.
105. The entry of all expenditure is necessary.
106. If necessary I will come at 6.
107. They need to pinpoint exactly what skills are necessary.
108. Mr Hurst regarded work as a necessary evil.
109. I think he regards work as a necessary evil.
110. This is a necessary consequence of progress.
111. Increase in population made emigration necessary.
112. Elections are necessary for the sustenance of democracy.
113. If necessary, you can contact me at home.
114. Mistakes are a necessary part of actualizing your vision.
115. He generously made up the necessary amount.
116. Was it really necessary for you to say that?
117. Sleep is necessary to/for one's health.
118. We will do whatever is necessary to stop them.
119. No advance booking is necessary on most departures.
120. It is necessary to stamp your passport.
More similar words: incessant, recessive, recession, adversary, essay, anniversary, go to pieces, access, excess, process, processor, excessive, processing, accessible, in excess of, successfully, due process of law, neck, as a rule, connect, as a result, connection, as a result of, assail, vassal, pass away, fortune cookie, assault, passage, be connected with.