When discussing issues with others, disagreements are bound to happen. There are numerous synonyms for the word 'disagreer' that can be used to describe someone who holds a different view or opinion. Terms like dissenter, objector, and opponent are commonly used to refer to individuals who disagree. The word 'contrarian,' which describes someone who actively goes against popular opinions or beliefs, is also a suitable synonym. Additionally, 'nonconformist' and 'maverick' can be used to describe someone who disagrees with societal norms or prevailing attitudes. Ultimately, these synonyms all refer to individuals who hold differing perspectives and opinions, which can lead to healthy debates or conflict.