English Reference

Word

mainly

Phoneticsmain·ly, stress on the first syllable

US/ˈmeɪnɫi/

UK/mˈeɪnli/

Adverb of degree

Definitions

01mostly or chiefly

B1 · Intermediate

adv. mostly; used to talk about the most important part of something or the most common situation.

adv. principally or for the most part; used to identify the primary factor, reason, or constituent in a set.

“The crowd at the music festival was mainly made up of teenagers.”

“The local economy relies mainly on seasonal tourism, which leaves many residents seeking alternative employment during the winter months.”

02forcefully

C2 · Proficiency Archaic

adv. with great strength or power.

adv. with great force, vigour, or intensity.

“The knights fought mainly against the invaders to protect their land.”

“In the ancient chronicles, the hero is described as striking mainly at his foes until the shield itself shattered under the pressure.”

Usage

In modern English, this sense has been entirely replaced by 'forcefully' or 'vigorously'.

Antonyms

Collocations

Common phrases and expressions where native English speakers use the word “mainly” in context.

Verb

01. mainly apply

“These new rules mainly apply to international students.”

adv + verb

02. mainly base

“The movie is mainly based on a true story.”

adv + verb

03. mainly cause

“The traffic jam was mainly caused by a broken-down bus.”

adv + verb

04. mainly compose

“The atmosphere is mainly composed of nitrogen and oxygen.”

adv + verb

05. mainly concentrate

“I want to mainly concentrate on my studies this semester.”

adv + verb

06. mainly concern

“The report mainly concerns the safety of the new building.”

adv + verb

07. mainly consist

“The audience mainly consisted of teenagers.”

adv + verb

08. mainly deal

“This department mainly deals with customer complaints.”

adv + verb

09. mainly depend

“Our success will mainly depend on how hard we work.”

adv + verb

10. mainly derive

“The company's profits mainly derive from online sales.”

adv + verb

11. mainly focus

“Today's meeting will mainly focus on the new budget.”

adv + verb

12. mainly involve

“The job will mainly involve answering phones and filing papers.”

adv + verb

Etymology

From Middle English maynly; equivalent to main + -ly.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

ADVERB

mainly(B1)

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B1 PreliminaryIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.4.0–5.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 3.0–3.544–71TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.550–784
Frequency
Common
Level
B1 · IntermediateOxford
Updated

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