▪ gradually cease to exist: "the environment is under threat—hedgerows and woodlands are vanishing"Similarcome to an endendcease to exist/bepass awaypassdie outbe no morebecome extinct/obsoleteevaporatedwindlefizzle outpeter outwear offbecome/grow lessbecome/grow smallerdecreaselessendiminishshrinkcontractfadewaneOppositematerializelast
2. become zero.
Word OriginMiddle English: shortening of Old French e(s)vaniss-, lengthened stem of e(s)vanir, from Latin evanescere ‘die away’.