terrifying
Word family
Synonym discussion
Sense: adjective/1
All four describe something that causes fear, but they differ in intensity and connotation. 'Scary' (informal, wide range) is the mildest and most common in everyday speech: a scary film or a scary noise. 'Frightening' is slightly more formal and stronger, used for situations that cause genuine alarm. 'Terrifying' sits higher on the scale, suggesting a level of fear that leaves a person shocked or frozen. 'Horrifying' adds an element of moral shock or disgust — a horrifying accident or crime. 'Petrifying' is the most extreme, implying that fear makes you unable to move. For everyday use, 'scary' or 'frightening' work best; use 'terrifying' for intense fear, 'horrifying' when disgust accompanies fear, and 'petrifying' for paralysing terror.
Common collocations
Etymology
Terrifying comes from the verb 'terrify', which entered English from French 'terrifier', itself derived from Latin 'terrere' (meaning 'to frighten' or 'to fill with fear'). The '-ing' suffix turns the verb into an adjective describing something that causes the emotion. The Latin root also gave us 'terror' and 'terrible'.