DICTIONARY ENTRY
5 SYLLABLES
efficaciousness
/,ɛfə'keɪʃəsnɛs/ · ɛfəkeɪʃəsnɛs
Efficaciousness has 5 syllables: ef · fi · ca · cious · ness.
ef
01
fi
02
ca
03
cious
04
ness
05
noun. Capacity or power to produce a desired effect.
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