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This technology is useless if you can’t operate it.
Why do you keep this completely useless umbrella?
Most of his inventions proved useless.
Will’s parents think acting is a useless profession.
It’s useless trying to talk to her because she never listens.
Don’t ask Geoff – he’s useless!
I’m useless at cooking.
Since the stroke, my left arm has been useless.
This is the British English definition of useless. View American English definition of useless.