(do something) a treat

(do something) a treat

To do something very well, adeptly, or satisfactorily. Primarily heard in UK. After we oiled up the chain a bit, that old bike worked a treat. My daughter's singing went down a treat with the family members gathered at our house for Christmas. Wow, this suit fits a treat! It makes such a difference going to a tailor.
See also: treat

treat someone (for something) (with something)

to attempt to cure someone's illness, injury, or disease with something. The doctor treated me for the flu with aspirin. It didn't work, but it was cheap. They treated him for his broken bones. Ann treated him with the appropriate therapy.

— a treat

used to indicate that someone or something does something specified very well or satisfactorily. British informal
1988 Ray Pickernell Yanto's Summer A flared cream pleated skirt that complemented those long perfect brown legs, and a powder blue tee shirt that matched her eyes a treat.
See also: treat