exacerbate

This term describes the process of intensifying a negative state, typically shifting a situation from bad to worse. It carries a heavy connotation of aggravation and is almost exclusively used in formal or clinical contexts, such as discussing political tensions or medical pathologies.

Unlike words that imply a sudden explosion of conflict, this word suggests a progressive worsening or a catalyst that triggers a more severe phase of an existing problem. It is never used to describe the improvement of a situation or the intensification of a positive emotion.