effective
gb/ɪfˈɛktɪv/ us/ɪfˈɛktɪv/
B1
Anglais
~ 1100
Sens
0 sens
adjective
B1
property
1
Producing the desired result
Able to produce the result you want.
Schéma d’usage :
[something] is effective at [doing something]
Erreur fréquente :
Learners sometimes confuse 'effective' with 'efficient'. 'Effective' means it works well, while 'efficient' means it works well with little waste.
Synonymes
successful (Emphasizes achieving a goal, sometimes with broader scope than 'effective'.)
|
efficient (Focuses on achieving results with minimal waste of time or resources.)
Antonymes
ineffective (Direct opposite; fails to produce the intended result.)
|
useless (Stronger and more negative; of no practical use.)
Collocations
highly effective
|effective method
|effective strategy
|effective communication
|effective treatment
Thèmes
business
|daily life
|problem solving
|core_vocabulary
|work
Exemples
- This new medicine is highly effective against the virus.
- The training program was effective in improving staff performance.
- Her speech was effective in changing public opinion.
- Regular exercise is effective at reducing stress.
- The new policy proved effective after just a few weeks.
Exemples pédagogiques
- The new rules are effective in schools.
- This cream is effective for dry skin.
- Exercise is effective for good health.
- The plan is effective and easy to follow.
adjective
formal
B2
property
2
In operation from a given time
Starting to be used or done from a certain time.
Schéma d’usage :
effective [date/time]
Erreur fréquente :
Learners may confuse this meaning with 'effective' meaning 'good at producing results'; here it refers to the start of official use.
Synonymes
operative (More technical/legal term for being in force.)
Antonymes
expired (No longer valid or in effect.)
Collocations
effective immediately
|effective date
|effective from
|effective as of
Thèmes
law
|business
Exemples
- The new law will be effective from January 1st.
- The changes are effective immediately.
- Her promotion is effective as of next Monday.
- The policy becomes effective upon signature.
Exemples pédagogiques
- The rule is effective today.
- My new job is effective next week.
- The law is effective from May 1.
adjective
formal
C1
property
3
Existing in fact, not formally recognized
Real or true in fact, even if not official.
Synonymes
actual (Emphasizes real existence regardless of formal status.)
Antonymes
nominal (Refers to something existing in name only without real power or effect.)
Collocations
effective leader (de facto)
|effective control
|effective power
Thèmes
law
|politics
|core_vocabulary
Exemples
- He is the country's effective ruler, though not elected.
- They have effective control over the region.
- She became the effective head of the department after her boss resigned.
Exemples pédagogiques
- She is the effective boss here.
- He has effective control of the team.
- They are the effective leaders now.
Grammaire
Forme canonique
effective
API
GB/ɪfˈɛktɪv/
US/ɪfˈɛktɪv/
Syllabes et accentuation
ef - fect - ive (3 syllabes)
Stress on 2nd syllable (fect)
Formes du mot
Adjective
- Base: effective
Famille de mots
Core family
Negative and opposite forms
Expressions
effective date
1/ɪfˈɛktɪv dˈeɪt/
fixed phrase
formal
Official start date of something
The day when something starts to be used or done by law or rule.
Exemples
- The contract's effective date is July 1st.
- Check the policy's effective date before signing.
effective immediately
1/ɪfˈɛktɪv ɪmˈidiɪtli/
fixed phrase
formal
Starting now without delay
Starting right now, without waiting.
Exemples
- Your suspension is effective immediately.
- The price increase is effective immediately.