1. aware of or knowledgeable about current trends, styles, or information; hip or up-to-date
Usage: informal; somewhat dated

1. a rhythmic call used to mark cadence, especially in military marching or group activities
Usage: often used in the phrase 'hep, two, three, four'

Examples

• She's hep to all the latest music and fashion trends.
• He wasn't hep to what was happening in the tech world.
• The drill sergeant called out 'hep, two, three, four' as the soldiers marched.
• My grandfather used to say he was hep back in the 1950s.
• The soldiers kept time with a rhythmic 'hep, hep, hep' as they drilled.