Malamanteau: Absatively

- Definition: A car crash between absolutely and positively
- Portmanteau: absolutely + positively
- Malapropism*: absolutely, positively

Source: XKCD Wiki / Neil Gaiman's Anansi Boys

* Note: Unless this portmanteau is used incorrectly towards it's listed malapropisms, it would not qualify as a malamanteau.

Malamanteau: Ambiviolent

- Definition: To be both violent and unsure
- Portmanteau: ambivalent + violent
- Malapropism: ambivalent and violent

Malamanteau - XKCD Wiki

(Note: ambiviolent would only qualify as a malamanteau if it was used as a malapropism in place of ambivalent or violent, not if it was used intentionally to mean "I can't decide who to kill first")

Malamanteau: Misunderestimate

- Definition: To both misunderstand and underestimate something
- Portmanteau: misunderstand + underestimate
- Malapropism: misunderstand and underestimate

Malamanteau - XKCD Wiki

Malamanteau: Miscommunicado

- Definition: To miscommunicate something while out of communication
- Portmanteau: miscommunicate + incommunicado
- Malapropism: miscommunicate and incommunicado

Malamanteau - XKCD Wiki