built in a night; makeshift; hastily prepared
Describes something constructed, written, or arranged quickly and often temporarily, with the implication of being a stopgap measure. Can refer to physical objects, written works, or plans.
This hut was built in a night, so it's not very sturdy.
彼のスピーチは一夜造りで、準備不足が明らかだった。
His speech was hastily prepared, and the lack of preparation was obvious.