There are several synonyms for the word "blaker" such as "darker," "gloomier," "murkier," and "obscure." Each of these words describes a lack of light or a degree of shadowiness. In addition, "blaker" can also be replaced with "dimmer" or "shadowier," as these words also convey a sense of less brightness. However, while these synonyms are similar in meaning, each one has its own nuance and context, and it is important to consider which word best fits the situation at hand. Overall, having a range of synonyms for a single word allows for a greater diversity of language use and more effective communication.