bigchallenge

noun
UK /bɪɡ ˈtʃælɪndʒ/
US /bɪɡ ˈtʃælɪndʒ/

A big challenge is a hard thing that you try to do.

Learning to ride a bike was a big challenge for me.


OTHER MEANINGS

2. A problem that needs a lot of work to fix.

Cleaning the whole garage was a big challenge.

3. A game or contest that is very hard to win.

The spelling bee was a big challenge for the class.

4. Something new that makes you try your best.

Making new friends can be a big challenge at a new school.