Final answer:
An antonym for 'scraper' could be 'applicator', as it refers to a device that applies a substance to a surface rather than removing it.
Step-by-step explanation:
The word scraper might refer to a tool or device used for scraping. Since 'scraper' generally indicates something used to scrape or remove material from a surface, an antonym for scraper would be a term that suggests adding to a surface or working in the opposite manner.
A suitable antonym could be applicator, which refers to a device that is used to apply a substance to a surface. For example, while a paint scraper removes paint, a paint applicator would be used to apply paint.