A "skilled thief" is someone who is very good at stealing things. They have developed special abilities and knowledge to take items without getting caught. Full definition
The bikes are so highly designed and unique that even a relatively skilled thief is going to have trouble shifting this particular stolen good. (littletechgirl.com)
People who live in the more secure buildings will sometimes get hit the worst by skilled thieves who only go for the biggest units with the best furnishings, which is why you should have yours fully backed in case you become their next target. (rentersinsurance.net)
If you're an Android geek installing custom ROMs and rooting your device for your own use, you probably aren't going to be the target of a determined and skilled thief who wants to access the data on your device. (howtogeek.com)