deacuerdo
agreed
de
of, from
+
acuerdo
agreement
De acuerdo (often misspelled as 'deacuerdo') means agreed and can be thought of as de0 (of0) + acuerdo1 (agreement1), literally meaning 'of agreement'.
adverb
- agreedIn agreement or accordance with somethingEstamos deacuerdo con la propuesta. // We are in agreement with the proposal.