the GNU version of the Collaborative International Dictionary of English
ad. In a signal manner; eminently.
The Century Dictionary and Cyclopedia
In a signal manner; conspicuously; eminently; memorably: as, their plot failed signally.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
ad. as a signal
ad. in a signal manner
Word Usage
"It was threatened to be withdrawn on their disobedience or apostasy; and most signally is the execution of that threatening seen in the present sterility of Palestine."