adjective Informal.

marked by or expressive of ardently enthusiastic spirit: a group of rah-rah undergraduates; a rah-rah attitude.

Origin of rah-rah

1910–15, Americanism; reduplication of rah
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British Dictionary definitions for rah-rah



informal, mainly US like or marked by boisterous and uncritical enthusiasm and excitement

Word Origin for rah-rah

C20: a reduplication of rah
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012