If you're looking for synonyms for the word "pilfer", you might consider using words like steal, thieve, purloin, rob, swipe, snatch, or filch. All of these words essentially mean the same thing as pilfer - to take something that doesn't belong to you without permission. Of course, depending on the context, different words may be more appropriate. For example, "rob" implies a more violent theft, while "snatch" might imply a quick, opportunistic theft. Regardless of which synonym you choose, it's always important to remember that taking things that don't belong to you is generally not a good idea!