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- pronunciation:
- ih
fek
tihv
| part of speech: |
adjective |
| definition 1: |
able to produce a result that you want.
That's a very effective medicine.- similar words:
- active, capable, efficient, powerful
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| definition 2: |
in operation.
This rule is effective immediately.- antonyms:
- expired
- similar words:
- functioning
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| related words: |
successful, useful |
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| derivations: |
effectively (adv.), effectiveness (n.) |
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