The definition of insufficient is that there is not enough of something.
Not having received special processing, such as dyeing or varnishing:
Lacking concealing elements.
Failing to meet a standard; below standard.
(Slang, of a person) Suspected of taking part in illicit or dishonorable dealings.
Absent; lacking; missing
Insufficient; not enough
Of a product or process, that it contains an error or flaw affecting performance; of a pleading or document, that it contains a shortcoming potentially causing its invalidity or leading to its dismissal.
(Geol.) Worn down only slightly by erosion, as a land surface having steeply entrenched stream valleys that lack well-developed flood plains
Not complete; not filled up; not finished; not having all its parts, or not having them all adjusted; imperfect; defective.
Located or situated on a lower level or beneath something else:
(Mineralogy) Dry and harsh to the touch (e.g., as chalk).
Of ordinary or undistinguished quality.
Ranking on the lower end of a designated scale:
Incompletely or imperfectly developed
Dearth is defined as a lack or small supply of something.
A lack or shortage, especially of something essential to health:
The definition of foible is a small character flaw.
Something that prevents, hampers, or hinders.
The definition of an impediment is an obstacle or something that prevents action.
The definition of a lacuna is a space where something is missing.
In an industrial setting, the empty space in a tank, such as for fuel
As much or as many as necessary, desirable, or tolerable; sufficient
The definition of ample is you have enough of something to meet your needs, and perhaps even some left over.
The definition of excessive is something or someone that goes beyond what is normal, acceptable or necessary.
Being more than is needed, useful, or wanted; surplus; excessive
Being entirely without flaw or imperfection.
Barely satisfactory; acceptable but not remarkable
The definition of scarce is a situation where there is too little of something or where something exists only in very small numbers.
Extending or traveling not far or not far enough:
Giving satisfaction sufficient to meet a demand or requirement; adequate.
Not having a sufficient or specified amount, as of money:
Healthier or more fit than before:
Filled up; brimming over:
Low or lower in quality, value, or estimation:
Find another word for deficient. In this page you can discover 52 synonyms, antonyms, idiomatic expressions, and related words for deficient, like: lacking, insufficient, inadequate, unfinished, crude, substandard, imperfect, sketchy, meager, wanting and scanty.