General:
* Unheard
* Invisible
* Lonely
* Alienated
* Isolated
* Ignored
* Disregarded
* Overlooked
More nuanced:
* Misconstrued (implies a misinterpretation of your words or actions)
* Misrepresented (implies that your perspective or intentions are being portrayed inaccurately)
* Unvalued (implies a lack of appreciation for your thoughts or feelings)
* Disrespected (implies a lack of consideration for your perspective)
* Unseen (implies that your presence or contributions are not recognized)
* Unacknowledged (implies that your existence or experiences are not acknowledged)
Stronger:
* Betrayed (implies a sense of broken trust)
* Rejected (implies a sense of being unwanted or unwelcome)
* Humiliated (implies a sense of shame or embarrassment)
* Frustrated (implies a feeling of being stuck or unable to communicate effectively)
The best word to use will depend on the specific context and the nuances of the feeling you want to express.