adjective. happening, coming, made, or done quickly, without warning, or unexpectedly: a sudden attack. occurring without transition from the previous form, state, etc.; abrupt: a sudden turn. impetuous; rash.

Whats the definition of sudden?

1a : happening or coming unexpectedly a sudden shower. b : changing angle or character all at once a sudden drop in the ocean bottom. 2 : marked by or manifesting abruptness or haste a sudden departure. 3 : made or brought about in a short time : prompt.

What is this word suddenly?

quickly and without warning; unexpectedly.