When it comes to finding synonyms for the word "steepens," one might consider words like "deepens," "heightens," or "intensifies." These words all convey the idea of something becoming more extreme or pronounced. Other potential synonyms might include "bolsters," "boosts," or "amplifies," all of which suggest an increase or enhancement of some sort. Depending on the context in which the word is being used, other suitable synonyms might also include "exacerbates," "aggravates," or "compounds," all of which imply a negative or worsening effect. Ultimately, the most appropriate synonym will depend on the situation at hand and the specific meaning that the writer is trying to convey.