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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.

Both main oil contracts rose Tuesday, with West Texas Intermediate topping $115 -- its highest in a month -- and Brent sitting around $111.

From Barron's • Apr. 7, 2026

In January, FBI agents searched the main election office in Fulton County, Ga., seeking records related to the 2020 race, which Biden won.

From The Wall Street Journal • Apr. 7, 2026

Several players he found came out of non-league and in some cases went on to play in the Premier League - Gareth McAuley and Gary Taylor-Fletcher being the two main examples.

From BBC • Apr. 6, 2026

Two main types of cells control this process.

From Science Daily • Apr. 6, 2026

But soon enough, a dozen or more hunting trails crisscross the main path, and it’s less clear where to go.

From "Clairboyance" by Kristiana Kahakauwila

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