The correct spelling is 'severely'.
You spelled it right.
Sever is correct.
Several
Several
several
Several.
several
Several.
plusieurs
The correct spelling is "several".
One battery, several batteries.
If it doesn't rain for several days (or even weeks), it's called a dry spell.If it rains for a period of several days, it is a wet spell.A "spell" here is simply an unspecified period of time, not a witch's "spell".
There are several forms and ways to spell it. Here are the usuals: Isa, Isay, Isey, Izaiah, Izey.
The noisy bird is a mockingbird (there are several species).
there a several ways of spelling : Koran, Quoran, Q'ran