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.
(..) No, no. That would just be too honest. So they've asked us... You couldn't possibly care less, could you? What do you expect? You can't all of a sudden be my best friend just because you had a bad day. I mean, hello, you've barely even spoken to me for months. Oh, what? You're "Mother of the Year"? (..)1999 American Beauty