run up
SeparableThe object can go before or after the particle — but a pronoun MUST go in the middle: “clean it up”, never “clean up it”.
How to say it
Stress the particle, not the verb: run UP. Saying “RUN up” is the clearest learner tell — the verb stays light and the particle carries the beat.
Link across the gap. The final /n/ of “run” moves onto the particle and starts its syllable: “run up” is said “ru-nup”. Pausing between the words is what makes phrasal verbs sound recited rather than spoken.
What it means
To accumulate a large bill or debt.
- “They ran up a huge bar tab.”
- “He ran up thousands in credit card debt.”
Similar: accumulate, rack up