Wiktionary
unforgetful
a. not forgetful
Usage examples of "unforgetful".
Orcus has heard my vow, and it is written in the book of the unforgetful Hades.
The Montague girl would see that the leading man who had done so much to insure the success of Baird's striving for the worth-while drama was not unforgetful of her favours and continuous solicitude.