Synonym: incapability, incompetence, ineptitude. Antonym: ability. Similar words: sustainability, ability, viability, liability, stability, disability, capability, durability. Meaning: [ɪnə'bɪlətɪ] 
n. 1. lack of ability (especially mental ability) to do something 2. lacking the power to perform.
n. 1. lack of ability (especially mental ability) to do something 2. lacking the power to perform. 
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1 I raged at my own inability.
2 His inability to speak English puts him at a disadvantage when he attends international conferences.
3 She felt increasingly frustrated by her inability to demonstrate her ideas.
4 He has to overcome his inability to assert himself.
5 It's inconstancy, but not inability, that's to be feared.
6 Her inability to understand the problem bothered her.
7 Alcoholism can result in an inability to cope.
8 Her inability to concentrate could cause an accident.
9 His inability to resist temptation would eventually cost him his freedom.
10 His inability to speak French puts him at a disadvantage.
11 His inability to handle the situation is a sure sign of weakness.
12 His inability to stay at one job for long had finally proved too much for her.
13 The party's main failing has been their inability to present a united front to the people.
14 His main weakness as a manager is his inability to delegate.
15 The book's weakness is the author's inability to sustain an argument.
16 My inability to do needlework was treated with surprising indulgence by my teacher.
17 The fundamental problem lies in their inability to distinguish between reality and invention.
18 The teacher was mortified by his inability to answer the question.
19 The government made open confession of its inability to cope with the crisis.
20 His inability to explain makes him smile again.
21 Inability to establish and maintain meaningful interpersonal relationships 2.
22 Inability to pronounce the items on the menu.
23 Inability to express hostility and aggressive feelings directly; 3.
24 In the presence of my inability to keep still he should have felt only terror.
25 He was suffering from all the classic withdrawal symptoms associated with giving up heroin - inability to sleep, anxiety,(www.Sentencedict.com) sweating and fever.
26 His fears of loneliness lay at the very root of his inability to leave.
27 Wall Street analysts have been highly critical of the company's seeming inability to control costs.
28 Some families go without medical treatment because of their inability to pay.
29 All that toughness is just a cover for his inability to show affection.
30 But he demanded high standards and as a classical scholar was exasperated by my inability to cope with Latin.
More similar words: sustainability, ability, viability, liability, stability, disability, capability, durability, affability, equability, unstability, instability, culpability, malleability, probability, reliability, availability, vulnerability, accountability, unpredictability, rehabilitate, mobility, rehabilitation, solubility, gullibility, flexibility, credibility, sensibility, possibility, irascibility.