Definition of "successfulness" [successfulness]

• The state or condition of being successful. (noun)

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• "One of his recent works is this chart of the human exploration of Mars, organized by country, date, type, and successfulness."
• "The successfulness of each sanctions regime was determined by examining both the policy result and the degree to which sanctions aided in achieving the policy change (Pape, 1997, p. 98)."
• "I can't prove it, but I've got a feeling there might be an inverse relationship between the likely successfulness of an adaptation and the brilliance of its source material."