Malignant
Malignant
Malignant would be the main answer, but another possible one is Cancerous.
benign
gentle, kindly, benign, well-intentioned
wen
Polite is a 6-letter word that is the opposite of rude.
A four letter word and the opposite of fat would be thin.
A five letter word for the opposite of lower is upper.
A 5-letter opposite for the word noisy is quiet,
The opposite word is "first."
stop or halt is a four letter word meaning the opposite of go.
The opposite for the word plain starting with letter f is FANCY.