haphazard

释义：“偶然的、随意的”。通常在留学文书里被用作环境描写，或是在更抽象的层面上体现一种不羁的生活状态或混乱的行业现况。

例句：
The walls are covered in a haphazard patchwork of posters.
Such studies illuminate the haphazard nature of the current approach to energy.