gunnysacking
n.— «Gunnysacking is a term for storing up hurt feelings, anger, affronts and unresolved conflicts, and, when the weight of the psychological gunnysack becomes too heavy to bear, unloading it, often to an inappropriate degree in an inappropriate context.» —“Leading in tough times” by David Noer News-Record (Greensboro, North Carolina) Feb. 22, 2009. (source: Double-Tongued Dictionary)
Further reading
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