matutinal a pertaining to or occurring in the morning took his matutinal walk Usage(s) Furman's sessions will be matutinal, with midday round-tables, with afternoons off for recreation. The afternoon Star, which had undergone a steady circulation slide to 170,000, was folded into its matutinal sister, the Tribune (circ. That uncle and his matutinal greeting were inspired by one of the earliest and most successful advertising campaigns ever conducted.