Types of dementias that progress and aren't reversible include: Alzheimer's disease. In people age 65 and older, Alzheimer's disease is the most common cause of dementia. Although the cause of Alzheimer's disease isn't known, plaques and tangles are often found in the brains of people with Alzheimer's.
A non-word that is the frequent misspelling of the word ulterior. Only loosers use the word alterior. He appeared to be genuinely interested in helping me out, but he had an alterior motive. #alterior #hidden #concealed #not up front #deceit.
Worser is a word but it's not standard and is considered bad english. The alternative is worst. If something becomes more than 'worse' it's best to say 'even worse'. 'Worse still' is acceptable. The references below, both dictionaries, make it clear that while there is such a word as 'worser' it is not standard.