If you chop up something (or chop something up) you cut it into smaller pieces with a knife or other sharp tool.
Examples of use:
1. Can you chop up the onions and put them in the frying pan, please?
2. The fire needs more wood. I’ll go and chop up some more.
When something has been cut into small pieces it is chopped up.
Example of use:
1. Put those chopped up onions in the frying pan, please.
infinitive – chop up
present simple – chop up and chops up
-ing form – chopping up
past simple – chopped up
past participle – chopped up
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