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Definitions

secondary

[sek-uhn-der-ee] / ˈsɛk ənˌdɛr i /
ADJECTIVE
subordinate; less important
Synonyms
STRONGEST
inferior insignificant trivial unimportant
STRONG
accessory alternate auxiliary backup collateral contingent dependent dinky extra lower minor petty relief reserve second small subject subsidiary supporting tributary
WEAK
bush-league consequential inconsiderable lesser minor-league second-rate small-fry small-time subservient substract under
Antonyms
STRONGEST
consequential important significant useful valuable worthwhile
STRONG
big chief huge large main major necessary primary
WEAK
causative first-class first-rate source superior
ADJECTIVE
derivative
Synonyms
STRONG
auxiliary dependent resultant subordinate subsidiary
WEAK
borrowed consequent derivate derivational derived developed eventual indirect proximate resulting second-hand subsequent vicarious
Antonyms
STRONG
chief important necessary
WEAK
causative first-class first-rate primary source superior

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The books were rather secondary, or even tertiary.

From Los Angeles Times • Apr. 9, 2026

Natasha Blackmore, 36, who was head of design technology at Westfield Academy secondary in Yeovil, Somerset, shared inappropriate details about her social life, a Professional Conduct Panel of the Teaching Regulation Agency heard.

From BBC • Apr. 6, 2026

Amgen reported that its product, Tepezza, met its primary and key secondary endpoints in moderate to severe active thyroid eye disease.

From Barron's • Apr. 6, 2026

For some people, a favorite charity can be a good secondary beneficiary.

From The Wall Street Journal • Apr. 3, 2026

Primary qualities are objective; secondary qualities are subjective, in that they depend on our ways of sensing.

From "The Invention of Science" by David Wootton