Summarily means done at once and without the usual formalities. Summarily dismissed, summarily rejected, summarily executed.
It is nearly always about something unpleasant done fast, since being summarily dismissed means without notice or hearing. In law it also marks the quicker kind of proceeding in a lower court, which is neutral.
1adverbsummarilyDone at once and without the usual formalities.
“His complaint was summarily rejected without anyone even reading it.”
summarily is a manner.
Latin
summa — total, sum
Medieval Latin
summārius
Middle English
summary
English
summary
English, today
summarily
From summary + -ly. summary comes from Middle English summary, from Medieval Latin summārius, from Latin summa (“total, sum”) + -ārius.
Etymology from Wiktionary, CC BY-SA