Here are some other ways to say "frightened" in Tagalog, depending on the context:
* Takot (fearful)
* Natatakot (scared)
* Kinatakutan (being feared)
* Nabigla (shocked)
* Nagulat (surprised)
* Nanginginig (trembling)
* Parang mapapatay na (looking like they're about to die from fear)
The best translation will depend on the specific situation and the level of fear you want to convey.