Weeding out is a term used to describe the process of removing unwanted or undesirable members from a group or organization. Synonyms for weeding out include culling, eliminating, purging, trimming, and sifting through. Culling is often used in the context of removing weak or sickly animals from a herd or pack. Eliminating suggests a more final and complete removal process. Purging implies a more deliberate and systematic approach to removing undesirables. Trimming is a milder term that suggests a gentle pruning of the group. Sifting through implies a more thorough examination and sorting process to identify and remove unwanted members. All of these synonyms represent the act of refining and improving a group or organization for greater effectiveness and success.