Pitchdark is a word used to describe absolute darkness without any light source. The word lacks proper antonyms in the traditional sense, as it is a specific term to describe darkness. However, there are a few words that could be considered opposite or contrasting to pitchdark. One could use words like bright, illuminated, or radiant, as they describe well-lit areas or spaces filled with light. Words like sunshine, daylight, and even glow could also be used to contrast the darkness of pitchdark. Overall, while pitchdark may not have strict antonyms, using contrasting words can help paint a more vivid picture in the mind of the listener or reader.