Sustenance is the act of providing FOOD, NOURISHMENT, and other necessary resources to sustain life. The crossword solutions for this term include LIVELIHOOD (10 letters), MAINTENANCE (11 letters), PRESERVATION (12 letters), SUBSISTENCE (11 letters), ALIMONY (7 letters), CONTINUANCE (11 letters), KEEP (4 letters), DIET (4 letters), FUEL (4 letters), LIVING (6 letters), SUPPORT (7 letters), NOURISHMENT (11 letters), BREAD (5 letters), FOOD (4 letters), UPKEEP (6 letters), and ALIMENT (7 letters). These words all refer to the act of providing sustenance in some way, whether it be through financial means, physical resources, or emotional SUPPORT.