acérrimo znamená v Angličtina

adamant▼(determined; unshakeable; unyielding)
adjective
[UK: ˈæ.də.mənt] [US: ˈæ.də.mənt]

staunch [stauncher, staunchest]▼(loyal, trustworthy, reliable)
adjective
[UK: stɔːntʃ] [US: ˈstɒntʃ]