sans aucun doute signifie anglais

undoubtedly▼◼◼◼(without doubt)
adverb
[UK: ʌn.ˈdaʊ.tɪd.li] [US: ʌn.ˈdaʊ.təd.li]

certainly▼◼◼◼(without doubt, surely)
adverb
[UK: ˈsɜːtn.li] [US: ˈsɝː.tən.li]

doubtless▼◼◼◻(without question)
adverb
[UK: ˈdaʊt.lɪs] [US: ˈdaʊt.ləs]

verily▼(truly, doubtlessly)
adverb
[UK: ˈve.rə.li] [US: ˈve.rɪ.li]

without a doubt▼◼◼◻(certainly; doubtlessly)
preposition
[UK: wɪð.ˈaʊt ə daʊt] [US: wɪð.ˈaʊt ə ˈdaʊt]

for sure▼◼◻◻(definitely)
preposition
[UK: fɔː(r) ʃʊə(r)] [US: ˈfɔːr ˈʃʊr]