unsuccessful

As adjectives the difference between unsuccessful and incompetent

is that unsuccessful is failed, not successful while incompetent is unskilled, lacking normally expected degree of ability.

As a noun incompetent is

a person who is incompetent.

As adjectives the difference between fruitless and unsuccessful

is that fruitless is useless; unproductive while unsuccessful is failed, not successful.

Unsuccessful is a related term of inept.

As adjectives the difference between unsuccessful and inept

is that unsuccessful is failed, not successful while inept is not able to do something; not proficient; displaying incompetence.

Futile is a synonym of unsuccessful.

As adjectives the difference between futile and unsuccessful

is that futile is incapable of producing results; useless; not successful; not worth attempting while unsuccessful is failed, not successful.

Unsuccessful is a related term of inefficacious.

As adjectives the difference between unsuccessful and inefficacious

is that unsuccessful is failed, not successful while inefficacious is incapable of having the intended consequence.

Unsuccessful is a related term of inoperative.

As adjectives the difference between unsuccessful and inoperative

is that unsuccessful is failed, not successful while inoperative is not working or functioning; either idle or broken.

Unsuccessful is a related term of ineffectual.

As adjectives the difference between unsuccessful and ineffectual

is that unsuccessful is failed, not successful while ineffectual is unable or insufficient to produce effect; futile.

Unsuccessful is a related term of unavailing.

As adjectives the difference between unsuccessful and unavailing

is that unsuccessful is failed, not successful while unavailing is useless, fruitless, futile.

As adjectives the difference between unsuccessful and vain

is that unsuccessful is failed, not successful while vain is overly proud of oneself, especially concerning appearance; having a high opinion of one's own accomplishments with slight reason.

Unsuccessful is a related term of hollow.

As adjectives the difference between unsuccessful and hollow

is that unsuccessful is failed, not successful while hollow is (of something solid) having an empty space or cavity inside.

As an adverb hollow is

(colloquial) completely, as part of the phrase beat hollow or beat all hollow.

As a noun hollow is

a small valley between mountains; a low spot surrounded by elevations.

As a verb hollow is

to make a hole in something; to excavate (transitive) or hollow can be to urge or call by shouting; to hollo.

As an interjection hollow is

.