decision (n.) Look up decision at Dictionary.com
mid-15c., from Middle French décision (14c.), from Latin decisionem (nominative decisio) "a decision, settlement, agreement," noun of action from past participle stem of decidere "to decide, determine," literally "to cut off," from de- "off" (see de-) + caedere "to cut" (from PIE root *kae-id- "to strike"). Decision making (adjective, also decision-making) is recorded from 1953.