Boast : talk with excessive pride and self-satisfaction about one's achievements, possessions, or abilities. Remember : have in or be able to bring to one's mind an awareness of (someone or something from the past). Manipulate : handle or control (a tool, mechanism, information, etc.) in a skilful manner. Harmonise : add notes to (a melody) to produce harmony. Commemorate : recall and show respect for (someone or something).