adjective·n3

急きゅう激げき

Sudden and intense; rapid and sharp (e.g., change, increase, decline)

急きゅう激げきな変化へんか

急きゅう激げきに増ふえる

Conjugations

dictionary急激だkyuugeki da

is sudden/rapid

negative急激ではないkyuugeki dewa nai

is not sudden/rapid

past急激だったkyuugeki datta

was sudden/rapid

past negative急激ではなかったkyuugeki dewa nakatta

was not sudden/rapid

te form急激でkyuugeki de

and/suddenly (connecting form)

adverb急激にkyuugeki ni

suddenly/rapidly