Part of speech:
Inadequate in amount, quality, or degree; not sufficient
Not complete; not filled up; not finished; not having all its parts, or not having them all adjusted; imperfect; defective.
The definition of insufficient is that there is not enough of something.
A scarce supply; a lack:
A lack or shortage, especially of something essential to health:
An error or flaw in a process or product, affecting performance and potentially causing harm; a shortcoming in a legal document that may lead to its invalidity, or in a pleading that may lead to its dismissal.
Inadequacy or insufficiency:
Lack is defined as you are in a position or state where you do not have something or where you do not have enough of something.
Poverty is the state of being poor, having little money or being in need of a specific quality.
Scarcity is defined as a state of something being in short supply.
The definition of a shortage is a situation where there is an insufficient amount of something.
The definition of a shortcoming is a failing or something that is considered to be a flaw.
A failure to attain a specified amount or level; a shortage.
A deficient amount; a shortfall.
An adequate amount or quantity:
Find another word for insufficiency. In this page you can discover 32 synonyms, antonyms, idiomatic expressions, and related words for insufficiency, like: inadequacy, deficient, incomplete, insufficient, dearth, deficiency, inability, incompetency, paucity, defect and deficit.