the GNU version of the Collaborative International Dictionary of English
n. One who wishes another well; one who is benevolently or friendlily inclined.
The Century Dictionary and Cyclopedia
n. One who wishes well, as to a person or a cause; a person favor ably inclined; a sympathizing friend.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. someone who shares your feelings or opinions and hopes that you will be successful
Word Usage
"Please to remember me and mine (all in health) to your parents, and to Mrs Baker and the twigs I am a never ceasing wellwisher, and to whom, with yourself, I tender my true esteem and affection"