perpetuus (without intermission, continual; e.g., laughter, risus): continens: continuus (without interruption or break; immediately following one another; e.g., accidents, incommoda; work, labor): assiduus (PROP., continually present; hence of things that continue long; e.g., rains, imbres): perennis (litterally, lasting through years; hence perpetual). (The words are found in this connection and order.) perennis atque perpetuus (e.g., perennes atque perpetui cursus stellarum, Cic.).