A trouper is typically defined as someone who is reliable, dependable, and resilient. This term can also be associated with those who have a lot of experience or expertise in a particular field. Synonyms for the word `trouper` can include: professional, veteran, performer, expert, adept, master, star, virtuoso, seasoned, and skilled. Individuals who are considered `troupers` are known for their ability to perform their roles flawlessly, whether in a theatrical play, musical performance, or any other area where success depends on their unwavering commitment to the task at hand. Ultimately, a `trouper` is someone who stays the course, demonstrates perseverance, and never gives up until the task is done.