na-adjective

sudden

kyuugekida

meaning: is sudden

state

feeling

examples

今年ことし値上ねあがり、急激きゅうげきだよね。

kotoshi no neagari, kyuugeki da yo ne.

This year's price rises are so sharp. casual

この十年じゅうねん人口じんこう減少げんしょう急激きゅうげきです。

kono juunen no jinkou genshou wa kyuugeki desu.

The fall in population over these ten years has been sharp. neutral