This is the way people speak when they are seriously falling in love.
Were he to fall seriously ill, that would be it.
But she returned to Jackson during the 1950's, when her mother and brothers fell seriously ill.
As a child he fell seriously ill with a contagious disease.
Her career lost its momentum after she fell seriously ill with food poisoning.
In 1659, Pascal, whose health had never been good, fell seriously ill.
In late 1958 Harden fell seriously ill, spending four whole years under medical care.
When he fell seriously ill in November 1967, there wasn't a vehicle nearby to take him to hospital.
When the boy fell seriously ill, his mother took him to a syed's house.
She fell seriously ill last week, but the virus was not diagnosed until Saturday.
