incompetent

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.

Pointless is a related term of incompetent.

As adjectives the difference between pointless and incompetent

is that pointless is having no point or sharp tip; terminating squarely or in a rounded end while incompetent is incompetent.

As an adjective incompetent is

incompetent.

Fruitless is a synonym of incompetent.

As adjectives the difference between fruitless and incompetent

is that fruitless is useless; unproductive while incompetent is incompetent.

Incompetent is a related term of untrained.

As adjectives the difference between incompetent and untrained

is that incompetent is incompetent while untrained is lacking training, not having been instructed in something.

Bootless is a related term of incompetent.

As adjectives the difference between bootless and incompetent

is that bootless is without boots or bootless can be profitless; pointless; unavailing while incompetent is incompetent.

As adjectives the difference between incompetent and inefficient

is that incompetent is unskilled, lacking normally expected degree of ability while inefficient is not efficient; not producing the effect intended or desired; inefficacious; as, inefficient means or measures.

As a noun incompetent

is a person who is incompetent.

Futile is a related term of incompetent.

As adjectives the difference between futile and incompetent

is that futile is incapable of producing results; useless; not successful; not worth attempting while incompetent is incompetent.