Below are links to two pdf files that list Filipino synonym and antonym pairs. There are around 280 synonym pairs or mga salitang magkasingkahulugan and about 100 antonyms pairs or mga salitang magkasalungat. The words are arranged alphabetically. The antonym pairs list is also translated in English. I hope you’ll find these helpful.
Mga Salitang Magkasingkahulugan : This is a 4-page pdf file that lists about 280 Filipino synonym pairs.
Mga Salitang Magkasalungat : This is a 3-page pdf file that lists about 100 Filipino antonym pairs.