effectiveness

1. 1.

   power to be effective; the quality of being able to bring about an effect

   Synonymseffectivityeffectualnesseffectuality

   Antonymsineffectiveness

   Broaderpower

   Narrowerincisivenessefficacy
2. 2.

   capacity to produce strong physiological or chemical effects

   “the toxin's potency”

   “the strength of the drinks”

   Synonymspotencystrength

   Broaderpower

Other forms of effectiveness

plural

effectivenesses·

Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.

Questions about effectiveness

What does effectiveness mean?

effectiveness means "power to be effective; the quality of being able to bring about an effect". That is the primary sense; the word has 2 in total, listed in full on this page.

How many syllables are in effectiveness?

effectiveness has 4 syllables: ef-fec-tive-ness. The stress falls on "fec". In IPA it is /ɪˈfɛktɪvnəs/.

What is another word for effectiveness?

Close synonyms include effectivity, effectualness, effectuality, potency, strength. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

What is the opposite of effectiveness?

The recorded antonyms are ineffectiveness.

Is effectiveness a common word?

effectiveness is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.

What rhymes with effectiveness?

1 word rhymes with effectiveness. Rhymes are matched on the phonemes from the last stressed vowel onward, which is the definition a reader has in their head.