= suddenly ; without warning ; all of a sudden ; just like that ; cold turkey ; all at once ; of a sudden.
Ex: Then suddenly he extinguished his smile and arranged his countenance so that his listener should suppose him to be profoundly disturbed. Ex: In February 1986 an unforeseeable financial crisis at the Georgia Institute of Technology's library made it necessary to divert the binding budget to other areas and without warning binding activities were halted. Ex: The process of secularization in Britain occurred all of a sudden sending Christianity on a downward spiral to the edges of social significance. Ex: All I have to say is nothing happens just like that overnight, it takes time and exhausting waiting. Ex: When heavy or frequent drinkers suddenly decide to quit 'cold turkey' they will experience some physical withdrawal symptoms. Ex: And, all at once, the moon arouse through the thin ghastly mist, crimson in color. Ex: Of a sudden, Stanton felt she knew which candidate had the superior experience, even if she could not at the moment understand what was meant by 'relatively equal'.