méticuleusement signifie anglais

meticulously▼◼◼◼adverb
[UK: mɪ.ˈtɪ.kjʊ.lə.sli] [US: mə.ˈtɪ.kjə.lə.sli]

painstakingly▼◼◼◻(in a painstaking manner; very slowly and carefully)
adverb
[UK: ˈpeɪnz.teɪk.ɪŋ.li] [US: ˈpeɪn.ˌstek.ɪŋ.li]