mainline

[meyn-lahyn, -lahyn] / ˈmeɪnˌlaɪn, -ˈlaɪn /

ADJECTIVE

principal

Synonyms

STRONGEST

dominant key leading main major outstanding paramount predominant preeminent primary prime prominent

STRONG

arch capital cardinal champion chief essential first head maximum premier sovereign star superior

WEAK

controlling crowning foremost greatest highest incomparable matchless peerless prevailing second to none stellar strongest supereminent supreme transcendent unapproachable unequaled unparalleled unrivaled

Antonyms

STRONGEST

inconspicuous inessential inferior insignificant last lesser minor nonessential ordinary secondary subordinate trivial unimportant unknown

STRONG

auxiliary least lower poor

WEAK

extra

VERB

inject

Synonyms

STRONGEST

vaccinate

STRONG

inoculate jab shoot

WEAK

give a shot

Antonyms

WEAK

take out

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.

Technology will be rolled out across 1,400 trains on mainline nationalised services allowing them to connect to low-earth satellites, instead of mobile networks.

From BBC • May 30, 2026

Is there any scope to speed up the delivery of new stations along the south Wales mainline, the first of which aren't projected to get underway until 2029?

From BBC • May 29, 2026

The airline’s cancellations related to pilot availability are more than 10 times historical levels, and account for 35% of its mainline flight cancellations.

From The Wall Street Journal • May 26, 2026

The service has been installed on regional jets and United says it will be on 50% of its mainline fleet by the end of the year and 100% next year.

From The Wall Street Journal • Apr. 25, 2026

Like many other evangelicals, some members attend churches that adhere to evangelical doctrine but that remain affiliated with mainline denominations.

From "Class Matters" by The New York Times

mainline

Example Sentences

Related Words