IPA: /ˈvænɪʃɪŋli/
KK: /ˈvænɪʃɪŋli/
In a way that causes something to disappear or become almost nonexistent.
The chances of winning the lottery are vanishingly small.
Vanishingly → It is formed from "vanish" (from Middle English *vanisshen*, meaning to disappear) and the suffix "-ingly" (meaning in a manner of). The word "vanishingly" describes something that disappears in a manner that is almost imperceptible or to a very small degree.
Think of something that is 'disappearing' ('vanish') in a way that is very subtle or slight ('-ingly'). This helps you remember that 'vanishingly' refers to something that fades away almost completely.