ad. In a surreptitious manner; stealthily, furtively, secretly.
The Century Dictionary and Cyclopedia
In a surreptitious manner; by stealth; in an underhand way.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
ad. in a surreptitious manner
Word Usage
"Now she has realised that by continuing dishonesty Blair and then Flash have succeeded in surreptitiously nudging the state forward but have forfeited the debate, which they have lost."