insufficent

As an adjective scant is

very little, very few.

As a verb scant is

to limit in amount or share; to stint.

As a noun scant is

(masonry) a block of stone sawn on two sides down to the bed level.

As an adverb scant is

with difficulty; scarcely; hardly.

As an adjective scarce is

uncommon, rare; difficult to find; insufficient to meet a demand.

As an adverb scarce is

scarcely, only just.

Insufficent is likely misspelled.

Insufficent has no English definition.

As a noun dearth is

a period or condition when food is rare and hence expensive; famine.