Part of speech:
Not efficient, as:
Not in a state to receive; not receptive; not susceptible; not able to admit.
Lacking strength or power; helpless and totally ineffectual.
Unable to act
Unable to engage in sexual intercourse, esp. because of an inability to have or sustain an erection
Not effective; not producing the desired effect; ineffectual
Lacking firmness of character or strength of will:
Wrong in a foolish and awkward way
The definition of fit is proper, appropriate or in good physical condition.
Enough or good enough for what is required or needed; sufficient; suitable
The definition of effective is something that is able to achieve a desired outcome or end result.
The definition of unqualified is something that is complete and total.
The definition of competent is a person or thing that is qualified to do something or adequate for a specific purpose.
Having or showing skill; accomplished; expert
(Law) Not legally qualified, as testimony that does not meet the standards for admissibility or a juror whose personal interest in the outcome of the case does not allow him or her to serve.
Not producing the desired effect:
Totally incapable of doing a job
(Law) No longer legally binding
Below the required standard; unqualified:
Find another word for unable. In this page you can discover 31 synonyms, antonyms, idiomatic expressions, and related words for unable, like: inefficacious, inefficient, incapable, able, powerless, incapacitated, impuissant, impotent, ineffective, weak and inept.