English Reference

Word

effectively

Phoneticsef·fec·tive·ly, stress on the first syllable

US/ˈifɛktɪvɫi/

UK/ɪfˈɛktɪvli/

Adverb of manner

Definitions

01successfully

B1 · Intermediate

adv. in a way that produces the result you want.

adv. in a manner that achieves the desired effect or intended result.

“The new law effectively reduced the amount of plastic waste in the city.”

“The marketing team effectively communicated the brand's core values to a younger demographic, resulting in a significant increase in seasonal sales.”

Pitfall

He works very effective.

He works very effectively.

Use the adverb 'effectively' to describe how someone works, not the adjective 'effective'.

Synonyms

Antonyms

ineffectivelyuselessly

02in reality

B2 · Upper Intermediate

adv. used to say what the real situation is, even if it is not official.

adv. used to describe a situation that is true for all practical purposes, though not perhaps officially or theoretically.

“The two companies have merged, so they are effectively one big business now.”

“Although the treaty has not been signed yet, the two nations are effectively at peace as all hostilities have ceased.”

Usage

Often placed at the beginning of a clause or before the main verb to qualify the entire situation.

Collocations

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

Verb

01. effectively address

“The government needs to effectively address the problem of rising energy costs.”

adv + verb

02. effectively apply

“Students should learn how to effectively apply these theories to real-life situations.”

adv + verb

03. effectively communicate

“Good leaders must be able to effectively communicate their vision to the team.”

adv + verb

04. effectively control

“New laws were introduced to effectively control the spread of invasive species.”

adv + verb

05. effectively function

“Without a clear plan, the department cannot effectively function.”

adv + verb

06. effectively perform

“The athlete trained hard to effectively perform under high pressure.”

adv + verb

07. effectively reduce

“Regular exercise can effectively reduce the risk of heart disease.”

adv + verb

Etymology

From effective + -ly.

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

Word family

ADJECTIVE

ADVERB

effectively(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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