Synonym: incapable, incompetent, unfit, unqualified. Antonym: able. Similar words: enable, sustainable, able, cable, table, be able to, tableau, variable. Meaning: [ʌnˈeɪb(ə)l] 
adj. 1. (usually followed by `to') not having the necessary means or skill or know-how 2. (usually followed by `to') lacking necessary physical or mental ability 3. lacking in power or forcefulness.
adj. 1. (usually followed by `to') not having the necessary means or skill or know-how 2. (usually followed by `to') lacking necessary physical or mental ability 3. lacking in power or forcefulness. 
Random good picture Not show
181. He was unable to convince the sceptics in the audience.
182. He stood staring at the dead body, unable to comprehend.
183. At the approach of cold weather, the troops were unable to keep holding the field.
184. He tired easily, though he was unable to sleep well at night.
185. If you don't have a regular income you may be unable to get credit.
186. She was unable to hide her delight at his failure.
187. The plants were unable to withstand the rigours of a harsh winter.
188. The accident left her feeling depressed and unable to face the world .
189. The fall in exports has left the country unable to service its debts.
190. Much to my regret, I am unable to accept your invitation.
191. Health services have been overburdened and are unable to care for many older people.
192. In regard to your request for information, I regret to inform you that I am unable to help you.
193. Many families on low incomes will be unable to afford to buy their own home.
194. His assistant stepped into the breach when the old surgeon was unable to go on with the operation.
195. She had a stroke and was unable to walk again.
196. They are standing in while the others are unable to take part.
197. A surprise that he was unable to hide registered on his face.
198. The police seem unable to cope with the rising tide of car crime.
199. Too many young people are unable to write or spell well(sentencedict.com/unable.html), as employers will testify.
200. He thinks there's great shame in being out of work and unable to provide for his family.
201. They have been unable or unwilling to resolve the conflict.
202. I'm unable to go into detail at this stage because I still have very little information about how the accident happened.
203. The police have been unable to trace the owner of the vehicle.
204. Due to the extreme cold, we were unable to plant the trees.
205. The government are unable to stem the tide of popular indignation.
206. Residents in the villages under attack have been unable to protect their homes from plunder.
207. He was a chronic alcoholic and unable to hold down a job.
208. She stared at her own bloodied hands, unable to think or move.
209. When it came to the nuts and bolts of running a business, he was clearly unable to cope.
210. The British driver was unable to hang on to his lead.
More similar words: enable, sustainable, able, cable, table, be able to, tableau, variable, bearable, suitable, reliable, vegetable, disabled, available, comparable, favorable, agreeable, on the table, inevitable, acceptable, changeable, vulnerable, tablespoon, remarkable, uncomfortable, be available, unchangeable, considerable, fortunately, complain about.