unclear or difficult to perceive

not clearly defined or delineated

अस्पष्ट

English Usage: His indistinct speech made it hard to understand his point.

Hindi Usage: उसका अस्पष्ट भाषण समझना मुश्किल था।

blurred or fuzzy

धुंधला

English Usage: He had an indistinct memory of the events from his childhood.

Hindi Usage: उसको अपने बचपन के घटनाओं का धुंधला याद है।