Italian edit

Etymology edit

From celebrato +‎ -issimo.

Adjective edit

celebratissimo (feminine celebratissima, masculine plural celebratissimi, feminine plural celebratissime)

  1. superlative degree of celebrato (highly honoured/honored)

Latin edit

Adjective edit

celebrātissimō

  1. dative/ablative masculine/neuter singular of celebrātissimus