[informal] ça va sans dire [expression in the 3rd person sg signifie anglais

go without saying▼(to be obvious, apparent or clear)
verb
[UK: ɡəʊ wɪð.ˈaʊt ˈseɪ.ɪŋ] [US: ˈɡoʊ wɪð.ˈaʊt ˈseɪ.ɪŋ]