ad. In an earnest manner; being very sincere; putting forth genuine effort.
the GNU version of the Collaborative International Dictionary of English
ad. In an earnest manner.
The Century Dictionary and Cyclopedia
In an earnest manner; warmly; zealously; importunately; eagerly; with real desire; with fixed attention.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
ad. in a serious manner
Word Usage
"Melissa Hathaway, President Obama's go-to adviser on cybersecurity, issued a rallying cry for the tech security community to begin earnestly collaborating on a "holistic approach" to slow rising cyber threats."