What does "insufficiency" mean?

The lack of sufficiency: a shortage, the state of having or being not enough (of something).

What is a synonym for "insufficiency"?

Common synonyms include: deficiency, inadequacy, lack, absence, arrear, arrearage.

Pronounced //ɪnsəˈfɪʃənsi//.

/ɪnsəˈfɪʃənsi/ noun

noun ·Moderate ·High school level

Noun

1
The lack of sufficiency: a shortage, the state of having or being not enough (of something).
"Near-synonyms: deficiency (broadly synonymous), inadequacy"
2
lack of an adequate quantity or number wordnet
3
(pathology) inability of a bodily part or organ to function normally wordnet
4
a lack of competence wordnet

"The drought led to an insufficiency of food."

From in- + sufficiency.