biggy

(noun)

noun

1. (colloquial) Something big in size in comparison to similar things.

- The wardrobe is the biggy – we'd better move that first.

2. (colloquial) Something impressive in comparison to similar things.

- Here's the biggy – she's only getting divorced!

3. (colloquial) big deal, usually in used in the negative.

- Dude, I forgot to return your book!

- No biggie, I don't need it for another week.