We've found 4 phrases for untrue (0.131 seconds):

flight of fancy »    An idea, narrative, suggestion, etc. which is extremely imaginative and which appears to be entirely unrealistic, untrue, or impractical; thinking which is very speculative.

nugget of truth »    A small amount of truth in a generally untrue statement.

throw dirt enough, and some will stick »    If enough allegations are made about someone or something, then even if they are all untrue, people's opinion of the person or thing will be diminished.1759, John Wesley, letter to John Downes, Rector of St. Michael's, Wood Street, read at Wesley Center Online at [1] on 14 Oct 06.I hope...that you are ignorant of the whole affair, and are so bold only because you are blind...And blind enough; so that you blunder on through thick and thin, bespattering all that come in your way, according to the old, laudable maxim, 'Throw dirt enough, and some will stick.'1857, Thomas Hughes, Tom Brown's Schooldays, read at fullbooks.com on 14 Oct 06,But whatever harm a spiteful tongue could do them, he took care should be done. Only throw dirt enough, and some will stick.1864, John Henry Newman, Apologia Pro Vita Sua, Penguin Classics (1994), p. 10,Archbishop Whately used to say

white lie »    A deliberate, untrue statement which does no harm or is intended to produce a favorable result.

New:  We also know Zip Codes FYI!