"Bog-trotter" is a derogatory term used to describe someone from Ireland. The term is considered offensive and should not be used. Instead, there are many other words that can be used to refer to someone from Ireland, such as Hibernian, Celtic, or Gaelic. These words are more respectful and accurately describe someone's heritage. Additionally, there are many words that can be used to describe someone who enjoys hiking or walking in wet or muddy environments, such as mudlarker, bogwalker, or swamp trekker. Using more specific language can help to avoid offensive terms and accurately convey meaning.