noun
articulation; enunciation; clear speech
Refers to how clearly and smoothly one pronounces words, especially in performance contexts like acting, voice acting, or public speaking. Often used in phrases like 滑舌がいい (good articulation) or 滑舌が悪い (poor articulation).
彼は滑舌がいいので、アナウンサーに向いている。
He has good articulation, so he is suited to be an announcer.
緊張すると滑舌が悪くなる。
My articulation gets worse when I'm nervous.
Compound of 滑 (smooth) and 舌 (tongue), literally 'smooth tongue'. The exact origin is uncertain, but it likely emerged in performing arts circles to describe clear, fluid speech.