
1) Impotent 2) In want of the wherewithal 3) Incompetent 4) Inefficient 5) Inept 6) Lacking competence 7) Lacking the ability 8) Lacking the know-how 9) Lacking the means 10) Lacking the necessary power 11) Lacking the power 12) Lacking the resources 13) Lacking the skill 14) Lacking the wherewithal
Found on
https://www.crosswordclues.com/clue/unable

1) Impotent 2) Incapable 3) Powerless
Found on
https://www.crosswordclues.com/clue/unable

• (a.) Not able; not having sufficient strength, means, knowledge, skill, or the like; impotent` weak; helpless; incapable; -- now usually followed by an infinitive or an adverbial phrase; as, unable for work; unable to bear fatigue.
Found on
http://thinkexist.com/dictionary/meaning/unable/

Is an indication report that the order, as given or when given, was unable to be executed. This can happen on a limit order where the market continues to trade at the limit price but there were other orders ahead of it on a time basis.
Found on
http://www.oasismanagement.com/glossary/

[
adj] - (usually followed by `to`) not having the necessary means or skill or know-how
Found on
http://www.webdictionary.co.uk/definition.php?query=unable
adjective (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`
Found on
https://www.encyclo.co.uk/local/20974

lacking the necessary power, competence, etc., to accomplish some specified act: He was unable to swim.
Found on
https://www.infoplease.com/dictionary/unable
No exact match found.