Synonyms for Shoplift:

n.

run away with, walk off with, burgle, help yourself to something.

v.

steal (verb)
filch, haul, rustle, swipe, swindle, embezzle, shanghai, plagiarize, grab, rob, abstract, steal, hijack, poach, palm, holdup, pilfer, walk off with, stickup, fleece, cop, extort, loot, pirate, plunder, pocket, lift, burglarize, nip, blackmail, defraud, mug, heist.

Other synonyms:

purloin
embezzle.
snitch
walk off with.
steal
plagiarize, steal.
Other relevant words:
burgle, run away with, walk off with.