tormentive
/ˌtɔrmɛnˈtɪv, ˌtɔrmənˈtɪv/Definitions
1. adjective
causing or feeling torment or great distress
“The tormentive memories of the past lingered in her mind.”
2. noun
a person or thing that causes torment or great distress
“The tormentive situation he found himself in was unbearable.”