1. not having a clear focus or direction; lacking concentration or clarity
Usage: British spelling variant of ‘unfocused’
2. not adjusted to produce a clear image
Usage: photography; optics

Examples

• Her unfocussed approach to studying made it difficult to retain information.
• The meeting was unfocussed and accomplished very little.
• He seemed unfocussed and kept losing track of the conversation.
• The photograph was unfocussed and difficult to make out.
• Without clear goals, the project remained unfocussed.
• The camera produced unfocussed images until we adjusted the lens.