Definition

To elevate someone or something to heroic status through praise, admiration, or celebration. It's the British spelling of 'heroized'—basically making someone legendary in the public eye.

Example Usage

The firefighter was heroised in the local news after rescuing the kitten from the tree.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=heroised&defid=2143515)