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late 13c., from Anglo-French suspecioun, from Old French suspeçun, sospeçon "mistrust, suspicion" (French soupçon), from Latin suspectionem (nominative suspectio) "mistrust, suspicion, fear, awe," from past participle stem of suspicere "look up at" (see suspect). Spelling in English influenced 14c. by learned Old French forms closer to Latin suspicionem.