say it: uh-NAY-buhl
unable is an adjective meaning "(usually followed by `to') not having the necessary means or skill or know-how". It carries 3 recorded senses.
(usually followed by `to') not having the necessary means or skill or know-how
“unable to get to town without a car”
“unable to obtain funds”
(usually followed by `to') lacking necessary physical or mental ability
“dyslexics are unable to learn to read adequately”
“the sun was unable to melt enough snow”
lacking in power or forcefulness
“an ineffectual ruler”
“like an unable phoenix in hot ashes”
Definitions, synonyms and semantic relations for unable come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.