General Frustration:
* Nabigo - This is the most common and direct translation. It means "failed" or "disappointed."
* Naiinis - This conveys a feeling of annoyance or irritation.
* Nagagalit - This implies anger or rage.
* Nasasakal - This translates to "suffocated" and can be used to describe feeling trapped or overwhelmed.
Specific Frustration:
* Na-disappoint - This is a more informal way of saying "disappointed."
* Na-frustrate - This is a direct loanword from English, but it's commonly used.
* Nalulungkot - This conveys sadness or disappointment.
* Nadismaya - This implies a feeling of being let down.
Examples:
* Nabigo ako sa pagsusulit. (I failed the exam.)
* Naiinis ako sa trapiko. (I'm frustrated with the traffic.)
* Nagagalit ako sa kanya dahil hindi niya tinupad ang pangako niya. (I'm angry at him because he didn't keep his promise.)
* Na-disappoint ako sa resulta ng halalan. (I'm disappointed with the election results.)
* Na-frustrate ako sa trabaho ko. (I'm frustrated with my job.)
The best translation will depend on the specific situation and the emotion you want to express.