incapable

Incapable is a related term of insufficient.

As adjectives the difference between incapable and insufficient

is that incapable is not capable (of doing something); unable while insufficient is not sufficient.

As a noun incapable

is (dated) one who is morally or mentally weak or inefficient; an imbecile; a simpleton.

Incommensurate is a related term of incapable.

As adjectives the difference between incommensurate and incapable

is that incommensurate is out of proportion (in size, degree or extent) with something else while incapable is not capable (of doing something); unable.

As a noun incapable is

(dated) one who is morally or mentally weak or inefficient; an imbecile; a simpleton.

As adjectives the difference between impotent and incapable

is that impotent is lacking physical strength or vigor; weak while incapable is not capable (of doing something); unable.

As a noun incapable is

(dated) one who is morally or mentally weak or inefficient; an imbecile; a simpleton.

Incapable is a synonym of inefficient.

As adjectives the difference between incapable and inefficient

is that incapable is not capable (of doing something); unable while inefficient is inefficient.

As a noun incapable

is (dated) one who is morally or mentally weak or inefficient; an imbecile; a simpleton.

As adjectives the difference between incapable and inferior

is that incapable is not capable (of doing something); unable while inferior is of lower quality.

As nouns the difference between incapable and inferior

is that incapable is one who is morally or mentally weak or inefficient; an imbecile; a simpleton while inferior is a person of lower stature to another.

Incapable is a synonym of unqualified.

As adjectives the difference between incapable and unqualified

is that incapable is not capable (of doing something); unable while unqualified is not qualified, ineligible, unfit for a position or task.

As a noun incapable

is (dated) one who is morally or mentally weak or inefficient; an imbecile; a simpleton.

Incapable is a synonym of inept.

As adjectives the difference between incapable and inept

is that incapable is not capable (of doing something); unable while inept is not able to do something; not proficient; displaying incompetence.

As a noun incapable

is (dated) one who is morally or mentally weak or inefficient; an imbecile; a simpleton.

Incapable is a synonym of unskilled.

As adjectives the difference between incapable and unskilled

is that incapable is not capable (of doing something); unable while unskilled is of a person or workforce: not having a skill or technical training.

As a noun incapable

is (dated) one who is morally or mentally weak or inefficient; an imbecile; a simpleton.

As adjectives the difference between impuissant and incapable

is that impuissant is weak; impotent; feeble while incapable is not capable (of doing something); unable.

As a noun incapable is

(dated) one who is morally or mentally weak or inefficient; an imbecile; a simpleton.