Less important or central than something else. See also ancillary activity and ancillary benefit.

Use ancillary in a sentence

  • I knew that my problems regarding the clogging of the company toilet were ancillary compared to the problems that they boss had to deal with regarding the loss of money due to recent deal with a client.

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  • I have lots of baking equipment. Ingredients, bowls, and an oven are essential to baking. A kitchen aide mixer is ancillary to my baking habit.

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  • If it weren't for the ancillary services that our IT Department provides in the event of major outages, our business would be much worse off.

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