Prodromous is an adjective typically used to describe something that indicates or precedes something else. Some synonyms for this word include preliminary, premonitory, warning, and heraldic. These words all suggest that something is about to happen or has already started to happen, but may not yet be fully realized. Other synonyms might include prelude, introductory, or preliminary stages, all of which imply a sense of anticipation and preparation. Whether describing a medical condition, a behavioral trait, or a cultural phenomenon, prodromous can help to convey a sense of urgency or importance that is often associated with things that are about to happen.