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Definitions

main

[meyn] / meɪn /
ADJECTIVE
principal, predominant
Synonyms
STRONGEST
central essential fundamental leading major particular preeminent primary prime special vital
STRONG
capital cardinal chief head necessary premier star
WEAK
controlling critical crucial foremost outstanding paramount prevailing stellar supreme
Antonyms
STRONGEST
auxiliary common inessential inferior minor ordinary secondary subordinate trivial unimportant usual
STRONG
unnecessary
WEAK
extra insignificant nonessential
ADJECTIVE
absolute, utter
Synonyms
STRONGEST
entire
STRONG
brute mere simple utmost
WEAK
direct downright only pure sheer undisguised
Antonyms
WEAK
auxiliary extra inessential insignificant minor nonessential secondary subordinate unimportant unnecessary
NOUN
pipe for system
Synonyms
STRONG
cable channel conduit duct line trough trunk

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 spokesperson added ACE organises its funding under nine main classifiers, including dance, libraries, museums, music and theatre.

From BBC • Apr. 4, 2026

The fire forced evacuations and closures, with Moreno Valley College announcing it would be closed Friday and Saturday, canceling all events on its main campus.

From Los Angeles Times • Apr. 4, 2026

On Saturday, a UN security official told AFP that Israeli forces destroyed 17 surveillance cameras linked to UNIFIL's main headquarters in Naqura.

From Barron's • Apr. 4, 2026

They note that the main culprit was a “catastrophically bad control-room design” where workers “were unable to understand what was going wrong.”

From Slate • Apr. 4, 2026

We’re waiting at reception, and I can see into the main lounge opposite.

From "Code Name Kingfisher" by Liz Kessler

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.