1. having no knowledge, understanding, or awareness about something
Usage: informal

Examples

• He was completely clueless about how to fix the computer.
• She seemed clueless when asked about the new policy changes.
• I’m totally clueless when it comes to cooking.
• The tourists looked clueless as they wandered around the city.
• Don’t be clueless – read the instructions first.
• He’s clueless about what’s really going on at work.