Background detail refers to the additional information that helps to understand a bigger picture or context. Synonyms for this term can vary depending on the situation or subject matter. For instance, supporting detail, underlying material, and contextual information can all describe the same concept as background detail. Other possible synonyms include relevant data, historical context, supporting evidence, and supplemental material. In addition, some words like underlying cause and extenuating factors can refer to background details that explain a particular event or situation. Regardless of the term used, background detail plays a crucial role in comprehending and interpreting information accurately.