でかい
dekai

i-Adjective

1. huge; big; gargantuan

Colloquial
こんなデカイのがチャリの荷台 にだい るわけないだろ。
konna dekai noga charino nidaini noruwakenaidaro.
There's no way one that big is going to go on a bike's luggage rest.
Other forms: