拙劣 (zhuō liè): เงอะงะ

He performed magic on stage for the first time, and his technique was very clumsy; the audience saw through his tricks immediately.

The argumentation in this paper is clumsy and full of logical loopholes; the advisor suggested he revise it.

That clumsy lie was quickly exposed because his statements were contradictory.

He tried to imitate the leader's handwriting for a signature, but the imitation was very clumsy and obviously fake at a glance.