English Reference

Word

ancillary

Phoneticsan·cil·lary

US/ˈænsəˌɫɛɹi/

UK/ˈænsɪləɹi/

Definition

adj. providing extra help or support to something more important. You use this to describe things that are secondary or additional to the main part.

adj. providing necessary support to the primary activities or operation of an organisation, institution, or system. Often describes services, costs, or staff that are subordinate to the main purpose.

Examples

“The hotel offers ancillary services like laundry and airport transfers.”

“While the main goal is education, the school provides ancillary support through counseling and career advice.”

“The court ruled that the ancillary evidence, though not central to the crime itself, was necessary to establish a pattern of behavior by the defendant.”

Examples

simple

“The hotel offers ancillary services like laundry and airport transfers.”

contextual

“While the main goal is education, the school provides ancillary support through counseling and career advice.”

complex

“The court ruled that the ancillary evidence, though not central to the crime itself, was necessary to establish a pattern of behavior by the defendant.”

Usage

Typically precedes the noun it modifies; frequently used in formal, legal, or technical contexts.

Real-World Examples

“It will have ancillary services such as counselling and physio.”
The Guardian · 20 Sept 2026

Etymology

From Latin ancillāris (“ancillary; relating to maids”), from ancilla (“maid”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry

Level
C1 · Advanced
Frequency
Occasional
Updated

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English Reference