abruptly vs peremptorily

abruptly

adv
  • In an abrupt manner; without giving notice, or without the usual forms; suddenly; precipitously. 

peremptorily

adv
  • In a peremptory manner; in a commanding tone, brooking no delay. 

How often have the words abruptly and peremptorily occurred in a corpus of books? (source: Google Ngram Viewer )