vanishingly
adverb uk/ˈvæn.ɪ.ʃɪŋ.li/ us/ˈvæn.ɪ.ʃɪŋ.li/
难以觉察地；消遁似的
used to emphasize how small, rare, etc. something is, so that it almost does not exist
There is only a vanishingly small chance that the dispute will end peacefully. 这场争执几乎没有能够以和平告终的机会。