Striking terror into can be replaced with its antonyms that will convey a completely opposite meaning. Some of the antonyms for striking terror into are comforting, reassuring, calming, peaceful, and soothing. These words have a positive connotation and evoke a sense of safety and security. While striking terror into signifies panic and chaos, the antonyms indicate hope and tranquility. The use of antonyms is vital in language as it offers a more nuanced expression and provides a broader context to the reader. In some situations, antonyms can also be used to convey a sense of irony or sarcasm, which can add an element of humor to the message.