Balderdash
/ˈbɔːldərdæʃ/
Definition 1 of 1
Pro Tip 1/3Informal Usage
Used in casual conversation, often to express disapproval or disbelief in playful manner. 
She said she's never using the internet again - what balderdash!
Pro Tip 2/3Emphasizing Falsehood
Emphasizes that something is believed to be completely untrue or nonsensical. 
He claimed he could fly without any aid, which is clear balderdash.
Pro Tip 3/3Dismissive Tone
Conveys a strong rejection or dismissal of the spoken or written content as unworthy of serious consideration. 
The old rumors about the haunted house were dismissed as balderdash by the locals.