There were no instances of the disease here until it 'suddenly' appeared last year.
The director's 'sudden' departure leaves the organization's future uncertain.
I was walking down the street when, 'all of a sudden', it started raining.
(..) - Why didn't you? - I don't know. - I couldn't. - That's not an answer. Why is this so important to you all of a sudden? Because I want to remember what you say right now. For the love of... I was a coward. I was weak. I wouldn't kill a dragon. You said "wouldn't". (..)2010 How to Train Your Dragon