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- pronunciation:
- ih
fek
tihv
| part of speech: |
adjective |
| definition 1: |
When something is effective, it is able to make a thing happen that you want to happen. If a medicine is effective, it works. It does what you want it to do.
The new laundry detergent is quite effective at getting out stains.Mr. Henry is a very effective teacher. His students learn a lot in his class.- synonyms:
- strong
- similar words:
- active, capable, efficient, forceful, influential, powerful, productive
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| definition 2: |
When a rule becomes effective, it starts to have force. People start having to obey it. If a law is not effective yet, it means that the law has been decided on, but nobody has to obey it yet.
The new rule will become effective at midnight tonight.- antonyms:
- expired
- similar words:
- functioning, valid
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| related words: |
practical, successful, useful |
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| derivations: |
effectively (adv.), effectiveness (n.) |
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