I was sick, but my brother was sicker, and our sister was the sickest of us all.
sicker
As August the cat became sicker and sicker, Jacob watched the cat's health decline.
No because he/she will get more sicker and sicker and sicker
For the word "sick, the comparative is "sicker" and the superlative is "sickest."
A six letter work is sicker.
flicker
no
Sick and Sicker - 2010 was released on: USA: 29 October 2010
The word sick is an adjective (sick, sicker, sickest), a word that describes a noun; sick is also a noun (a non-count noun) for a group that are sick, for example 'caring for the sick'.
Albert Sicker has written: 'Kind und Film' -- subject(s): Motion pictures and children
It's possible to develop some resistance to the poison. Or you'll get sicker and sicker by the day.