
1) All of a sudden 2) Brief 3) Briefly 4) Briskly 5) Brusquely 6) Brutally 7) Callously 8) Curtly 9) Dead 10) Harshly 11) Hastily 12) Offhandedly 13) Out of the blue 14) Quickly and without warning 15) Rapidly 16) Roughly 17) Rudely 18) Short 19) Shortly 20) Snappily 21) Succinctly 22) Suddenly 23) Suddenly and unexpectedly
Found on
https://www.crosswordclues.com/clue/abruptly

• (adv.) In an abrupt manner; without giving notice, or without the usual forms; suddenly. • (adv.) Precipitously.
Found on
http://thinkexist.com/dictionary/meaning/abruptly/
Ab·rupt'ly adverb 1. In an abrupt manner; without giving notice, or without the usual forms; suddenly.
2. Precipitously.
Abruptly pinnate (Botany) ,
pinnate without an odd leaflet, or other appendage, at the end. Gray. Found on
http://www.encyclo.co.uk/webster/A/8

[
adv] - quickly and without warning
Found on
http://www.webdictionary.co.uk/definition.php?query=abruptly

abrupt, abruptly 1. Ending suddenly; jerky and disconnected; curt and rough in speech. 2. Surprisingly curt; brusque; such as, an abrupt answer made in anger. 3. Touching on one subject after another with sudden transitions: abrupt prose. 4. Steeply inclined; having a sharp inclination; precipitous. 5. In botany, terminating suddenly rather than...
Found on
http://www.wordinfo.info/words/index/info/view_unit/1875/
suddenly adverb quickly and without warning; `he stopped suddenly`
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.