Verb: run on Meaning: Be powered by The van RUNS ON diesel.
Verb: run up on Meaning: Approach someone without their knowing Robert was sitting in his car and a guy RAN UP ON him and shot through the car but missed.
Verb: rip on Meaning: Criticise or insult The media are RIPPING ON the government.
Verb: roll on Meaning: When something continues to happen The competition ROLLED ON despite the administrative problems.
Verb: roll on! Meaning: Said when you can’t wait for something nice in the future Roll on Friday! It’s been a dreadful week.