incompetent

As adjectives the difference between incompetent and disable

is that incompetent is incompetent while disable is (obsolete) lacking ability; unable.

As a verb disable is

to render unable; to take away an ability of.

As adjectives the difference between incompetent and insufficient

is that incompetent is unskilled, lacking normally expected degree of ability while insufficient is not sufficient.

As a noun incompetent

is a person who is incompetent.

As adjectives the difference between incompetent and inconsiderate

is that incompetent is unskilled, lacking normally expected degree of ability while inconsiderate is not considerate of others, thoughtless.

As a noun incompetent

is a person who is incompetent.

As adjectives the difference between incontinent and incompetent

is that incontinent is unable to contain or retain while incompetent is unskilled, lacking normally expected degree of ability.

As nouns the difference between incontinent and incompetent

is that incontinent is one who is unchaste while incompetent is a person who is incompetent.

As adjectives the difference between incompetent and disabled

is that incompetent is incompetent while disabled is made incapable of use or action.

As a noun disabled is

one who is disabled (often used collectively as the disabled , but sometimes also singular).

As a verb disabled is

(disable).

As adjectives the difference between incompetent and unskillful

is that incompetent is unskilled, lacking normally expected degree of ability while unskillful is not skillful.

As a noun incompetent

is a person who is incompetent.

Inefficacious is a related term of incompetent.

As adjectives the difference between inefficacious and incompetent

is that inefficacious is incapable of having the intended consequence while incompetent is incompetent.

As adjectives the difference between incompetent and unfit

is that incompetent is unskilled, lacking normally expected degree of ability while unfit is not fit; not having the correct requirements.

As a noun incompetent

is a person who is incompetent.

As a verb unfit is

to make unfit; to render unsuitable, spoil, disqualify.

Inoperative is a related term of incompetent.

As adjectives the difference between inoperative and incompetent

is that inoperative is not working or functioning; either idle or broken while incompetent is incompetent.

Incompetent is a related term of inferior.

As adjectives the difference between incompetent and inferior

is that incompetent is incompetent while inferior is of lower quality.

As a noun inferior is

a person of lower stature to another.