"dreadfully by" is not a commonly used phrase in English and it does not make sense in a sentence.
It is possible that you meant to use the phrasal verb "dread by," which means to fear or be anxious about something. Here are some examples: - I dread by the thought of having to give a presentation in front of a large audience. - She dreads by the idea of going to the dentist. - The students all dread by the upcoming finals week.
She hasn't yet made up her mind between new and old, but said the resales she has seen suffer dreadfully by comparison.
The constituency of everything to be feared has also been altered dreadfully by a technology which vastly underwrites a capacity for evil as it does the capacity for the social good.
These were the children of the elite – only members of the ruling Workers' party are allowed to live in Pyongyang – and yet even their growth had been stunted dreadfully by famine, one overseen by the then leader Kim Jong-il who diverted food supplies to the military and had a well-documented personal fondness for lobster and French brandy.
Dreadfully murdered by a woman's hand.
Sontag died dreadfully altered by cancer.
British politics was dreadfully damaged by the Iraq war, in spite of Mr Cook's heroic efforts and example.
Bishops, done in 2004 when he was already dreadfully incapacitated by cancer, is a painting of premonition.
This design by Kevin Knight creates a barrier between audience and play that the actors work hard to break down – with some success – though they are dreadfully impeded by their personal amplification systems.
But if you actually read the original, you will find that the last five chapters – nearly half the book and, I think, the half the author thought most urgent and important – elaborate the idea that civilisation is dreadfully threatened by the way the lower classes outbreed the aristocracy.
Putin, Katusa argues, has been dreadfully mischaracterized by politicians eager to show off foreign policy credentials they don't really have and by their lapdogs in the media.
Through centuries of millennial revival movements, we Americans have yearned for the kingdom of God, the republic of virtue, and been dreadfully tempted by the preceding day of judgment, the orgy of destruction.
