Malapropism

Malapropism is switching or swapping a wrong word (intentional or unintentional) to a word with the same chime or sound as the intended word. 

If it is intentional, some people resort to malapropism to pull off a comic stunt ... or they come off with humor lines provoking laughter and mirth.

Word retrieval problems are usually age-related changes in the brain ... or mental health conditions ... at times neurological.

                       You become UNINHIBITED because you are on an UNINHABITED island?

Statement: The survivors of the plane crash were marooned on a UNINHABITED island.

Malapropism: The survivors of the plane crash were marooned on UNINHIBITED island.

In malapropism, there seems to be some sort of aphasia-like situation where the person is having trouble finding the right word ... to finish his statement.

It seems like there is some sort of a blackout in the person ... instead, he switched or swapped some words to a word that sounds like the intended word.