Italian edit

Etymology edit

From certo +‎ -issimo.

Adjective edit

certissimo (feminine certissima, masculine plural certissimi, feminine plural certissime)

  1. superlative degree of certo (very certain, very sure)

Anagrams edit

Latin edit

Adjective edit

certissimō

  1. dative/ablative masculine/neuter singular of certissimus