noun
(countable, uncountable) Intense dread, fright, or fear.
(uncountable) The action or quality of causing dread; terribleness, especially such qualities in narrative fiction.
(countable) Something or someone that causes such fear.
(uncountable) Terrorism.
(pathology, countable) A night terror.
adjective
(Philippines, slang) A strict teacher who fails most of the students.