vanish
van.ish \'van-ish\ vi [ME vanisshen, fr. MF evaniss-, stem of evanir, fr. (assumed)] VL exvanire, alter. of L evanescere to dissipate like vapor, anish, fr. e- + vanescere to vanish, fr. vanus empty 1a: to pass quickly from sight : DISAPPEAR 1b: to pass completely from existence 2: to assume the value zero - van.ish.er n