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effectiveness
noun
See more 4-syllable nouns

Divide effectiveness into syllables:

ef · fec · tive · ness

How to pronounce effectiveness:

Definition of effectiveness:

effectiveness (noun):
the ability or skill to do something
power to be effective; the quality of being able to bring about an effect.

Synonyms for effectiveness:

successforceineffectualpowerstrengthcapabilitycredibilityinfluenceefficiencyeffectuality
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Antonyms for effectiveness:

inexperiencestoppagesloppinessidlenessineptitudeblockimpairmentdefectclumsinessdeficiency
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Other 4-syllable words like effectiveness

Here are some other common words that have 4 syllables, like effectiveness does.

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Syllable Quiz
How many syllables in the word effaces?

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Syllable Fun Fact
In linguistics, a heavy syllable typically contains a long vowel or ends in a consonant, affecting word stress.

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