Attrition is a term used to describe the gradual decrease in numbers of a group or organization due to various factors. DISINTEGRATION (14 letters) is the process of breaking down into smaller parts, PENITENCE (9 letters) is the feeling of regret and SORROW for a wrong committed, FRICTION (8 letters) is the resistance that occurs when two objects rub against each other, COMPUNCTION (11 letters) is a feeling of guilt or regret, CONTRITION (10 letters) is a state of being sorry for one's sins, SORROW (6 letters) is an emotion of deep sadness, ABRASION (8 letters) is the wearing away of a surface by rubbing, GRINDING (8 letters) is the process of reducing something to small particles, and Warof (5 letters) is a conflict between two or more parties. All of these terms can be used to describe the concept of attrition.