Definitions

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.

The news has sparked excitement and discussion among fans, particularly around the next mainline entry starring a woman.

From BBC • Jun. 3, 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 genius of hit songs, beyond technical artistry—and the vagaries of timing—is the ability to mainline emotion.

From The Wall Street Journal • Mar. 5, 2026

There had been nothing going out on the West Coast mainline and hardly any announcements, she said.

From BBC • Nov. 21, 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