The words "precipitous" and "embittered" convey a tone that is more aligned with a foreboding tone.
"Precipitous" often indicates something that is steep or sudden, suggesting a sense of danger or an alarming change, while "embittered" conveys feelings of resentment and a sense of having been wronged. Together, these words create an atmosphere of unease and negativity, which supports the idea of a foreboding tone.