Strong's #5388: nshiyah (pronounced nesh-ee-yaw')
from 5382; oblivion; --forgetfulness.
Brown-Driver-Briggs Hebrew Lexicon:
ּׁ
neshı̂yâh
1) forgetfulness, oblivion
Part of Speech: noun feminine
Relation: from H5382
Usage:
This word is used 1 times:
Psalms 88:12: "in the dark? and thy righteousness in the land of forgetfulness?"