1. having no purpose or meaning; serving no useful function
2. having no sharp point

Examples

• It’s pointless to argue with someone who won’t listen.
• The meeting seemed completely pointless and wasted everyone’s time.
• She felt her efforts were pointless since no one appreciated her work.
• The pencil was pointless after being sharpened too many times.
• His pointless knife couldn’t cut through the rope.
• The debate became pointless when both sides stopped listening.
• It would be pointless to water the plants during a rainstorm.