Too clever, quick, etc. by half - Idioms by The Free Dictionary
too clever, quick, etc. by half
too (something) by half
Far too something; more something than is necessary. Used in the form, "too (something) by half." Primarily heard in UK. Liam is too clever by half, winning every debate he gets into. That child is too noisy by half!
too clever, quick, etc. by ˈhalf (British English, informal, disapproving) much too clever, quick, etc: That boy is too charming by half — he can get you to do anything he wants. ♢ I don’t like her at all — she’s too clever by half.