Use "unable" when someone cannot do something because they do not have enough skill, power, or means. It shows a lack of ability or possibility.
I am unable to open the door.
She was unable to finish her work.
Use "unable" to show someone cannot do something because of a physical or health problem. It means their body or condition stops them from doing it.
He is unable to walk after the injury.
She was unable to speak clearly today.
"Unable" can mean a person cannot do something because of outside reasons like time, place, or conditions. It shows external limits, not personal ability.
I am unable to attend the meeting tomorrow.
They were unable to reach the city by car.
"Unable" can mean someone does not have the legal or formal right to do something. It means they are stopped by rules or laws.
They are unable to disclose confidential information.
He was unable to enter the restricted area.
"Unable" can describe someone who cannot do something because of emotions or mental state. It means they feel too weak or afraid to act.
She was unable to face her problems today.
He was unable to speak because he felt sad.
Use "unable" when someone does not have enough skill or knowledge to do a task. It shows a lack of qualifications or experience.
He was unable to solve the difficult problem.
She felt unable to explain the rules to us.
"Unable" in technology shows that a machine, system, or software cannot do something because of technical limits or errors.
The device was unable to connect to the internet.
The software is unable to open this file format.
