de surcroît betyder på engelska

moreover▼◼◼◼(in addition to what has been said)
adverb
[UK: mɔː.ˈrəʊ.və(r)] [US: mɔːˈro.ʊ.və(r)]

furthermore▼◼◼◼(In addition; besides; what's more; used to denote additional information)
adverb
[UK: ˌfɜː.ðə.ˈmɔː(r)] [US: ˈfɝː.ðər.ˌmɔːr]

what is more▼◼◼◻(furthermore)
adverb
[UK: ˈwɒt ɪz mɔː(r)] [US: ˈhwʌt ˈɪz ˈmɔːr]

besides▼◼◼◻(also; in addition)
adverb
[UK: bɪ.ˈsaɪdz] [US: bə.ˈsaɪdz]

besides▼◼◼◻(moreover; furthermore)
adverb
[UK: bɪ.ˈsaɪdz] [US: bə.ˈsaɪdz]

besides▼◼◼◻(in addition to)
preposition
[UK: bɪ.ˈsaɪdz] [US: bə.ˈsaɪdz]