FORMES FRUSTES By N., Pam M.S. - May 11, 2013 a French term for the indefinite or the atypical symptoms of a disease. It is French for coarse forms. FORMES FRUSTES: "Formes rustes is a French term describing symptoms." Related Psychology Terms ACUTE DELUSIONAL PSYCHOSIS ANTIPSYCHOTICS SANFILIPPO REMISSION LYME DISEASE PROCESS-REACTIVE ANHEDONIA STUDENT'S DISEASE ANOMIC SUICIDE UNDULATIO REFLEXA Cite this page: N., Pam M.S., "FORMES FRUSTES," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/formes-frustes/ (accessed December 13, 2019).