I print big, but often you write one line on top of the other so it's virtually unreadable.
Sampras is at his most articulate during his service motion - which happens, naturally, to be silent and virtually unreadable.
Such charming notions quickly evaporate when one discovers that the best and brightest color displays of today's laptop computers are virtually unreadable outdoors.
Popular works could be printed and reprinted until the block became so worn that the impressions were virtually unreadable.
Recopying that on a copier makes it virtually unreadable.
She considered, damping her jet down so as to be virtually unreadable.
The first paragraph was filled with more six-syllable words than anyone had ever seen and was virtually unreadable.
Many E-mail programs do not show this header because it is virtually unreadable to most people and it is rarely important to anyone.
But the print on a sign that says no parking is permitted on the terminal dock is so small as to be virtually unreadable.
It's a recipe, in this case, for a virtually unreadable book that manages to be simultaneously pretentious, sentimental, bubble-headed and gratuitously violent.