Onomatopoeia for crunchy, crisp sounds when walking on frost, hard snow, gravel, etc.
早朝、霜の上をザクザクと歩いた。
In the early morning I walked crunchily (zaku-zaku) on the frost.
落ち葉をザクザク踏む音が秋の散歩の楽しさを増す。
The crunching (zaku-zaku) of stepping on fallen leaves makes an autumn walk more enjoyable.
雪道を長靴でザクザク進むと歩きやすい。
It's easier to walk when you trudge through a snowy path with boots, making a zaku-zaku sound.
Casual/colloquial term describing abundance of coins/jewels or making a lot of money quickly.
彼は株でザクザク儲けたらしい。
It seems he made a lot of money (zaku-zaku) from stocks.
宝箱を開けるとコインがザクザク入っていた。
When I opened the treasure chest, it was full (zaku-zaku) of coins.
Describes roughly chopping into large pieces, or a coarse/loose weaving; often conveys a hearty or rustic texture/sound.
キャベツをザクザク切ってサラダに加えた。
I roughly chopped the cabbage (zaku-zaku) and added it to the salad.
パンはザクザク切れるクラストが特徴だ。
The bread is characterized by a crust that cuts with a zaku-zaku sound.
そのセーターは粗めにザクザク編まれていて暖かい。
That sweater is loosely knitted (zaku-zaku) and warm.
Quasi-adjectival use describing something coarse, with large pieces or stitches (texture), often used for food texture or fabric.
このクッキーはザクザクの食感で人気がある。
These cookies are popular for their zaku-zaku (crunchy/coarse) texture.
生地がザクザクしているので、サクサクとはまた違った歯ごたえだ。
The dough has a zaku-zaku texture, which gives a different bite than crispy (saku-saku).