Litterbug is a word used to describe someone who carelessly drops litter in public spaces. However, there are many alternatives to this term that can be equally effective in conveying the same meaning. For starters, the term "litterer" can be used to describe someone who litters, while "polluter" is another great option. Other synonyms for litterbug include "garbage thrower", "rubbish dropper", "trash dumper" and "waste tosser". All of these terms effectively communicate the idea of someone who has little regard for keeping the environment clean and healthy. In essence, any term that portrays the careless and thoughtless nature of littering could serve as a worthy substitute for the term "litterbug".