What is the meaning of be on cloud nine?

verb

WordNet 3.0 © 2006 by Princeton University
10
 
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APAWordNet. (2010). be on cloud nine. Retrieved September 20, 2026, from http://smartdefine.org/be_on_cloud_nine/definitions/1259621
ChicagoWordNet. 2010. "be on cloud nine" http://smartdefine.org/be_on_cloud_nine/definitions/1259621 (accessed September 20, 2026).
HarvardWordNet 2010, be on cloud nine, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/be_on_cloud_nine/definitions/1259621>.
MLAWordNet. "be on cloud nine" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/be_on_cloud_nine/definitions/1259621>