Vocab hint! Willy-nilly!

I was watching a movie the other day and I heard this: I willy-nilly had to go to school.

In Portuguese we could translate as:  Eu tive que ir para a escola por bem ou por mal!

I’ve heard other expressions with a similar meaning ( come hell or high water, by hook or by crook) but this one (willy-nilly) sounded more informal.

For more reference go to:

http://www.thefreedictionary.com/willy-nilly