Jerky
Part of speech: adjective
Definition: Characterized by physical jerking.
Part of speech: noun
Definition: Lean meat cured and preserved by cutting into thin strips and air-drying in the sun.
Sudden
Part of speech: adjective
Definition: Happening quickly and with little or no warning.
Part of speech: adverb
Definition: Suddenly.
Example sentence: Life on Earth is at the ever-increasing risk of being wiped out by a disaster, such as sudden global nuclear war, a genetically engineered virus or other dangers we have not yet thought of.