Strong's #4123: mahathallah (pronounced mah-hath-al-law')
from 2048; a delusion:--deceit.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
mahăthallâh
1) deceptions, illusions
Part of Speech: noun feminine
Relation: from H2048
Usage:
This word is used 1 times:
Isaiah 30:10: "speak unto us smooth things, prophesy deceits:"