Plural of backwash; multiple instances of water flowing backward or multiple negative consequences resulting from an action.
Regular plural formation of 'backwash' using the -es suffix, following standard English pluralization rules that developed from Old English conventions.
Even though 'backwash' is usually uncountable (like 'water'), we can pluralize it to discuss multiple separate events—a surfer might experience different backwashes from different waves throughout a single day.
Complete word intelligence in one call. Free tier — 50 lookups/day.