noun: a calm or relaxed state
noun: a disposition free from stress or emotion
noun: freedom from activity (work or strain or responsibility) ("Took his repose by the swimming pool")
noun: the absence of mental stress or anxiety

Hughes
combinations of dissonance, rests, sounding neither scale nor chords. Dissonance does not express opposition or separation, for there is no principle in musical tones which is productive of contraries; the dissonances follow the attraction of the tonic, or key-note, and the neutralization of the musical disturbance is implied in the disagreement in their motion with the repose of the unit, or key-note. So far is this from producing separation, that the apparent discord is simply a preparation for growth, the life of harmony causing an inherent tendency towards closer union. [Harmonies of Tones and Colours, Combinations of dissonance, rests, page 24]