For we hear of some who walk among you in rebellion, who don't work at all, but are busybodies.
The word "busybodies" (perierkomai) means "to bustle about uselessly, to busy one’s self about trifling, needless, useless matters." Thayer comments further by saying "used apparently of a person officiously inquisitive about others’ affairs [A.V. to be a busybody], 2 Thessalonians 3:11" (Thayer 502-2-4020). This is the only time this form of the Greek word is used in the New Testament.