You searched for: “infuscating
infuscate (IN fush kate") (verb), infuscates; infuscated; infuscating
1. To darken, to make black, or to obscure: When Jake looked out of his window, he noticed that the mountains were infuscated with fog.

Tom used black dye to infuscate his shirt completely so all of the spots which were seen before were no longer visible.

2. Etymology: from Latin infuscare, "to darken, to discolor".
This entry is located in the following units: -cate (page 4) fusc- (page 1)