sympathiser
sym·pat·hi·ser
noun
1.
commiserates with someone who has had misfortune
2.
someone who shares your feelings and expresses sympathy or hopes that something will be successful
Origin
From sympathise + -er.
Related words
Word family
Broader terms
Narrower terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.