Word: unefficacious
Part of speech: Adjective
Syllables: un
ef
fi
ca
cious
Definition: Not efficacious; marked by qualities giving the power to produce an intended effect; -Aldous Huxley
Morphemes:
Affix: un-
Language: en
PoS: Prefix
Meaning: absent; lacking; not; negative
Affix: efficacious
Language: en
PoS: Adjective
Meaning: Effective; possessing efficacy.
Etymology Compounds: Affix: ex-
Language: la
Decoded: ex-
Meaning: out of
Affix: faciō
Language: la
Decoded: facio
Meaning: do, make
Affix: -ax
Language: la
Decoded: -ax
Meaning: inclined to
Affix: -ous
Language: en
Decoded: -ous
PoS: Suffix
Meaning: Used to form adjectives from nouns, to denote possession or presence of a quality in any degree, commonly in abundance.