Final answer:
The word 'summarily' in the phrase '___ will be 'summarily' hanged' means 'promptly'.
Step-by-step explanation:
The word 'summarily' in the phrase '_____ will be 'summarily' hanged' means 'promptly'. It suggests that the hanging will happen quickly and without delay. To understand this, consider the context of the sentence:
'Very good, Bartleby,' said I, in a quiet sort of serenely severe self-possessed tone, intimating the unalterable purpose of some terrible retribution very close at hand. At the moment I half intended something of the kind. But upon the whole, as it was drawing towards my dinner-hour, I thought it best to put on my ____.'
In this context, the speaker intends to carry out the retribution quickly, without unnecessary delay.