There are many synonyms for the term "Second Epistle to Timothy," which is a book of the New Testament in the Bible. Some synonyms include "2 Timothy," "Second Timothy," and "Epistle of Paul to Timothy II." These synonyms are often used interchangeably to refer to the same book. The book is written by the apostle Paul to his disciple Timothy, and it contains instructions on how to lead a Christian life, exhortations to be steadfast in faith, and warnings against false teachings. The book is regarded as a valuable source of spiritual guidance and is commonly studied and referenced by Christians around the world.