treacherously+◼◼◼adverb
traitorously+◼◼◼adverb[UK: ˈtreɪ.tə.rə.sli] [US: ˈtreɪ.tə.rə.sli]
disloyally+adverb[UK: dɪsˈlo.ɪə.li] [US: dɪsˈlo.ɪə.li]
treasonably+adverb[UK: ˈtriː.zə.nə.bli] [US: ˈtriː.zə.nə.bli]
contributively+adverb
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