Not in a state to receive; not receptive; not susceptible; not able to admit.
Not efficient, as:
Lacking strength or power; helpless and totally ineffectual.
Not effective; not producing the desired effect; ineffectual
Lacking firmness of character or strength of will:
Unable to engage in sexual intercourse, esp. because of an inability to have or sustain an erection
Unable to act
(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.
(Law) No longer legally binding
Having or showing skill; accomplished; expert
The definition of fit is proper, appropriate or in good physical condition.
Enough or good enough for what is required or needed; sufficient; suitable
Totally incapable of doing a job
Not effectual; not producing or not able to produce the desired effect
The definition of effective is something that is able to achieve a desired outcome or end result.
Wrong in a foolish and awkward way
Below the required standard; unqualified:
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.
Find another word for unable. In this page you can discover 34 synonyms, antonyms, idiomatic expressions, and related words for unable, like: inefficacious, incapable, inefficient, impuissant, able, cannot, unable-to, powerless, ineffective, weak and helpless.