ostinatamente significa in inglese

obstinately▼(in an obstinate manner)
adverb
[UK: ˈɒb.stɪ.nət.li] [US: ˈɒb.stɪ.nət.li]

stubbornly▼(in a stubborn manner)
adverb
[UK: ˈstʌ.bən.li] [US: ˈstʌ.bərn.li]