Here are some examples of how to use it in a sentence:
* Ang kape ay mapait. (The coffee is bitter.)
* Ang prutas ay mapait. (The fruit is bitter.)
* Mapait ang karanasan niya. (His experience was bitter.)
You can also use the word pait to refer to bitterness itself, as in:
* Nararamdaman ko ang pait ng pagkawala. (I feel the bitterness of loss.)