feederism
n.— «The practice of feederism is defined as the promotion of intentional weight gain for the sexual pleasure of oneself or another person. People engaging in the active practice of feederism are referred to as feeders and feedees. Feederism is also known as “encouraging,” and its participants as “encouragers” and “gainers.”» —“Against Feederism” National Assoc. to Advance Fat Acceptance Apr. 29, 2004. (source: Double-Tongued Dictionary)