precelebrate

English

Etymology

Verb

precelebrate (third-person singular simple present precelebrates, present participle precelebrating, simple past and past participle precelebrated)

(transitive) To celebrate in advance.
- 2019, Marcus P. Chu, Politics of Mega-Events in China's Hong Kong and Macao, page 137:
  The Chinese executive also appreciated Ho and his administration to use the 2005 EAG to precelebrate the Beijing 2008 Olympics.