without warning; abrupt; out of nowhere...
"The kids were working at their desks, when "suddenly" the loud screeching of a fire alarm sounded."
what is suddenly?
2 answers
Since this is not my area of expertise, I searched Google under the key words "suddenly" to get these possible sources:
https://www.google.com/search?client=safari&rls=en&q=suddenly&ie=UTF-8&oe=UTF-8&gfe_rd=ssl&ei=cMZEVo_kNOWD8QfHxYzYBg
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
https://www.google.com/search?client=safari&rls=en&q=suddenly&ie=UTF-8&oe=UTF-8&gfe_rd=ssl&ei=cMZEVo_kNOWD8QfHxYzYBg
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.