overhaul Synonym

rework - revamp - renovation - refurbishment - refit - rebuild - reconstruction - modernization - upgrade - redesign - redesigning - restructuring - reorganization - shake‑up - reform - renewal - revamping

Overhaul refers to a thorough examination, repair, and improvement of a system, machine, process, or structure. It goes far beyond minor fixes or routine maintenance and usually involves disassembling key components, identifying wear or faults, replacing or refurbishing parts, and reassembling to restore full and reliable functionality. The goal is often to return something to like-new condition or to modernize it so it meets current standards and requirements. The term is widely used in engineering, aviation, automotive work, software, and organizational processes, whenever a deep, comprehensive renewal or restructuring is needed.