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http://en.wiktionary.org/wiki/ferocissimae

 

Ferōcissimae:

1. nominative feminine plural of ferōcissimus

2. genitive feminine singular of ferōcissimus

3. dative feminine singular of ferōcissimus

4. vocative feminine plural of ferōcissimus

 

http://en.wiktionary.org/wiki/ferocissimus#Latin

Ferōcissimus (superlative of ferōx): most or very wild, defiant or arrogant