Synonyms: unable
Definition: (usually followed by `to') lacking necessary physical or mental ability
Usage: dyslexics are unable to learn to read adequately; the sun was unable to melt enough snow
Similar words: incapable
Definition: (followed by `of') lacking capacity or ability
Usage: incapable of carrying a tune; he is incapable of understanding the matter; incapable of doing the work
Synonyms: ineffective, ineffectual, unable
Definition: lacking in power or forcefulness
Usage: an ineffectual ruler; like an unable phoenix in hot ashes
Similar words: impotent
Definition: lacking power or ability
Usage: Technology without morality is barbarous; morality without technology is impotent- Freeman J.Dyson; felt impotent rage