uneducated, illiterate
The antonym form of the word 'gradual' is sudden.
impromptuspontaneousfree form
reduced
Chide is a form of scolding, as in when a mother scolds her child... So, Commend/ Laud could be an antonym...
The antonym for organism could be "inanimate object" or "non-living entity."
The noun form for the verb to demolish are demolisher and demolishment. Another noun form is demolition.
There are NO antonyms for constellations right now. Unless it was ' not group of stars that form pictures'. Sorry.
The antonym for prejudge is "postjudge," which means to form an opinion or judgment after considering all the facts or information.
Meningitis is an often fatal bacterial disease. As it is a medical condition and diagnosis there is no antonym form to the term, or its microbiological pathogen of the same name.
The antonym for cuneiform is modern, as cuneiform refers to an ancient form of writing while modern indicates something current or up-to-date.
yell, scream, bellow any form of being loud
the antonym for uniformitarianism is CATASTROPHISM. Uniformitarianism means to take a long period of time for the Earth to form. Catastrophism means the Earth quickly formed.