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Pronunciation varies by accent · noun
(obsolete) The state or quality of not being deficient; sufficiency.
the indeficiency of faith, final perseverance
Use indeficiency when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Indeficiency means (obsolete) The state or quality of not being deficient; sufficiency.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
the indeficiency of faith, final perseverance
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