the GNU version of the Collaborative International Dictionary of English
ad. From that time; thereafter.
The Century Dictionary and Cyclopedia
From that time forward.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
ad. from that time on
Word Usage
"And his father, as soon as he found me turned into the mistress, and “his lady” (as he would have me called thenceforth, whether or no on my part), not another word would he tell me of the household sentiments, politics, or romances."