na-adjective
Describes a situation, action, or behavior that is so ridiculous or poorly executed that it resembles a farce or comedy skit. Often carries a critical or mocking tone.
彼の言い訳は茶番的で、誰も信じなかった。
His excuse was farcical and no one believed it.
会議は茶番的な展開になり、何
The meeting took a farcical turn and nothing was decided.
滑稽 means 'comical' or 'funny' in a more general sense, while 茶番的 specifically implies absurdity or farcical quality, often with a negative connotation.
Derived from 茶番 (farce, comic skit) + the suffix 的 (-like, -ical). The word 茶番 originally referred to a low-ranking servant who served tea, and later came to mean a farcical performance.