balderdash
noun/ˈbɔːldədæʃ/
/ˈbɔːldərdæʃ/
[uncountable] (old-fashioned)- ideas, statements or beliefs that you think are silly or not true synonym nonsenseWord Originlate 16th cent. (denoting a frothy liquid; later, an unappetizing mixture of drinks): of unknown origin.
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balderdash