Etymological root
efficāx
Latin
Words from this root(4)
efficacious
C2+
/ˌɛfɪˈkeɪʃəs/
effective in producing a desired result
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efficacity
C2+
/ˌɛfɪˈkæsəti/
the power or capacity to produce a desired effect; efficacy
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efficacy
C2+
/ˈɛfɪkəsi/
the ability to produce a desired or intended result
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efficaciously
C2+
/ˌɛfəˈkeɪʃəsli/
in a way that produces the intended result effectively
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