adj. of, or relating to a mode or modusadj. of, relating to, or describing the mood of a clauseadj. of, relating to, or composed in the musical modi by which an octave is divided, associated with emotional moods in Ancient - and in medieval ecclesiastical musicadj. of, or relating to the modality between propositionsadj. relating to the statistical mode.adj. Having separate modes in which user input has different effects.adj. requiring immediate user interaction (often used as modal dialog or modal window)adj. Relating to the form of a thing rather to any of its attributesn. A modal propositionn. A modal form, notably a modal auxiliary.