This word is not acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

ad. A direction in musical notation indicating that the musical piece should be played very fast and lively.

"_prestissimo_ (superlative of _presto_) _vivacissimo_ (superlative of _vivace_) _allegrissimo_ (superlative of _allegro_) _prestissimo possibile_ (hypersuperlative of _presto_)"