IPA: /kənˈtræktər/
KK: /kənˈtræktər/
A person or company that agrees to provide services or materials for a specific price, often in construction or other projects.
The contractor completed the renovation of the house ahead of schedule.
Contractor → It is formed from "contract" (from Latin "contractus", meaning drawn together or agreed upon) and "-or" (meaning a person who). A contractor is a person who agrees to perform work or provide services under a contract.
Think of someone who 'agrees' ('contract') to do work — the '-or' indicates that this person is the one performing the action.