Word parts disagree + -ment or dis- + agreement Pronunciation (UK) IPA (key): /dɪsəˈɡriːmənt/ Audio (US)(file) Noun Singular disagreement Plural disagreements An argument or debate. There was a disagreement about what color to paint the bedroom, but they have reached a decision. When something does not agree with something else. There is disagreement between the brother and sister about what color the shirt is. Synonyms difference conflict argument dispute variance Antonyms agreement Related words agree disagreeWikiwand - on Seamless Wikipedia browsing. On steroids.