Definition
Secondary support that does the heavy lifting nobody talks about—like the backup systems keeping your primary operation from collapsing. It's subordinate in title only; often essential in practice.
Example Usage
The ancillary services department handles IT support, facilities, and admin—basically everything that keeps the main operation running.
Source: Merriam-Webster Dictionary
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See “ancillary” in Corporate Speak, Gen-Z Slang, Pirate Speak, and more.
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