Your prophets have seen for you false and foolish visions; They have not uncovered your iniquity, to bring back your captivity, But have seen for you false oracles and causes of banishment.
(162) So it means when applied to eatables, but folly or absurdity when applied to words. It comes from נפל, to fall, in the sense of decaying or degenerating. It is what is neither wise nor true. Hence it is rendered “foolishness” by the Sept. ; “foolish” by the Vulg. ; and “without substance” by the Targ. — 