1. Not on a regular route of a transportation system
   "an off-line ticket office" 
2. Not connected to a computer network
   "off-line resources"

Antonym: on-line

Encyclopedia: Off-line

• househusband
• housekeep
• housekeeper
• housekeeping
• houseleek
• houselights
• housemaid
• housemaid's knee
• houseman
• housemaster
• housemate
• housemother
• housepaint
• houseplant
• houseroom
• Houses of Parliament
• housetop
• housewares
• housewarming
• housewife
• housewifely
• housewifery
• housework
• housewrecker
• housey-housey