effective

efficace

Che funziona bene e produce il risultato desiderato.

In inglese semplice: Something that works well and gives the result you want.

• This is an effective treatment for headaches.
• Their new strategy was surprisingly effective.
• Which method is most effective for teaching beginners?

Come si usa: effective against something (This spray is effective against mosquitoes.); effective in doing something (The lessons were effective in improving her reading.)

Sinonimi: successful, useful, efficient

Contrari: ineffective

Espressioni comuni: effective treatment, effective method, effective against something, effective protection

in vigore, valido

Che si applica o opera ufficialmente da un momento preciso.

In inglese semplice: Officially applying or operating from a particular time.

• The new rules are effective immediately.
• The agreement became effective last month.
• What is the effective date of the change?

Come si usa: effective from a date (The contract is effective from the first of June.); effective on a date (The new policy becomes effective on Monday.)

Sinonimi: in force, valid

Espressioni comuni: effective date, become effective, effective from monday

incisivo, efficace

Che influisce molto su ciò che le persone provano, pensano o fanno.

In inglese semplice: Having a strong effect on how people feel, think, or act.

• Her speech was brief but effective.
• The silence made the final scene especially effective.
• He delivered an effective argument that changed several minds.

Sinonimi: powerful, persuasive, forceful

Contrari: ineffective

Espressioni comuni: effective speech, effective ending, effective argument

effettivo, di fatto

Che esiste o viene esercitato nella pratica, anche senza riconoscimento ufficiale.

In inglese semplice: Actually present or held in practice, even without official recognition.

• The rebels had effective control of the town.
• She held effective power despite having no official title.
• The agreement gave workers effective control over hiring.

Sinonimi: actual, de facto

Espressioni comuni: effective control, effective command, effective power

a partire da, da

Indica il momento da cui qualcosa si applica ufficialmente.

In inglese semplice: Starting officially at the time mentioned.

• Effective Monday, parking will be free.
• The company raised its prices effective yesterday.
• Effective next year, all students will receive free lunches.

Come si usa: effective + time (Effective tomorrow, the office will open at eight.)

Sinonimi: as of, starting from

Espressioni comuni: effective immediately, effective tomorrow, effective next month