Somebody describes his misunderstanding of what someone was saying by stating, "I misconscrewed it up."
Someone explains his inability to
talk while being upset by saying he was "flustrated."
A meaningful malamanteau is "ambiviolent," as in: "Beatrix
Kiddo in Kill
Bill was ambiviolent. She didn'
t know who to kill first."
George W. Bush's inadvertent malamanteau "misunderestimated" has entered
common usage.
Someone describes being misinformed as "being miscommunicado", a mixture of miscommunicate and incommunicado.
The discussion in the wikipedia page for 'Malamanteau' is a "Wikibroidery" (Wikibroglio)