"Kaffet är för svagt."

Translation: The coffee is too weak.

[Yerrick]

Kaffe är för de svaga.

(That's how I initially read this sentence...)

[JoakimWest1]

Isnt it supposed to be "to weak"?

[Zmrzlina]

No, there is a difference between "to" and "too".

[Charles697505]

why 'SVAGT" AND NOT "SVAGA"?

[devalanteriel]

Swedish makes a difference between predicative and attributive. What this means in practice is that if the adjective comes before a definite noun, you use the definite form of the adjective - but if it comes after a definite noun, you still use the indefinite.