Agutaynen - ka-lem

Sourness; tartness of something.

maka-lem

Sour; tart.

maasim

Ang kawmangga mga ilaw pa dorog kaka-lem.

When mangoes are still unripe they are very sour.

-an

For something to taste sour to a person, making them wrinkle up their face.

Agka-lemano tang sirgoilas mga ilaw pa.

Spanish plums taste sour to me when they are still unripe.