Adjective Endings Without an Article

No article means the adjective itself has to signal the case

When der or ein is dropped — usually with uncountable nouns like coffee, or plural nouns with no article — the adjective has nowhere to hide: it takes on the exact ending the missing article would have had (der → -er, dem → -em, den → -en, and so on). This is the strongest possible contrast with Tamil's completely invariant adjectives, and it's also the most mechanical of the three patterns: if you can recite der/die/das across all four cases from memory, you already know every ending this pattern needs — just move it from the article onto the adjective.