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.

“We’ve made it kind of core to who Allegiant is to seek out opportunities that aren’t typically served by mainline carriers,” said Drew Wells, the airline’s chief commercial officer.

From The Wall Street Journal • May 17, 2026

The service is installed on more than 300 of those planes but just 18 of its mainline jets.

From The Wall Street Journal • Apr. 1, 2026

In the 2025 spending review, the Department of Transport secured £41m to introduce low earth orbit satellite connectivity on all mainline trains by 2030.

From BBC • Nov. 16, 2025

Alexander told BBC Breakfast that BTP officers would increase visible patrols at mainline stations over the coming days "because I do understand that people will want to feel reassured following what happened".

From BBC • Nov. 3, 2025

Black Muslims came in many stripes, from mainline Nation of Islam to the splinter Five Percenters.

From "Newjack: Guarding Sing Sing" by Ted Conover

mainline

Example Sentences

Related Words