Dark cloud cover is a term used to describe a bearish candlestick pattern in technical analysis. It typically signals a reversal of the previous trend in the market. However, there are several other synonyms that can be used to describe this pattern. Some of the popular ones include the bearish engulfing pattern, the bearish harami pattern and the evening star pattern. These patterns all indicate a potential reversal in the market and that the bears may have taken control. It's important for traders to identify these patterns and use them as part of their trading strategy to minimize losses and increase profits.