Decisionism is a term used to describe the phenomenon of emphasizing quick and decisive action over careful consideration and thoughtful reflection. Synonyms for decisionism might include impulsivity, recklessness, haste, impetuousness, and precipitancy. Alternatively, one might use the term decisive leadership to refer to a style of decision-making that emphasizes swift action based on a clear understanding of the situation at hand. Other synonyms might include assertiveness, confidence, and resoluteness. Ultimately, the choice of terminology will depend on the context and tone in which the concept is being discussed, but these options provide a range of options for describing this phenomenon.