Conducive means tending to cause or produce something. Regular exercise is conducive to happiness and a feeling of well-being.
This adjective is usually followed by the preposition to, and it refers to bringing about something favorable or helpful: A positive attitude is conducive to good health. Conducive was formed in English from the less common verb conduce "to lead or contribute to a result." The verb conduce descends from Middle English conducen, from Latin conducere, from the prefix com- "together" plus ducere "to lead." And the suffix –ive means "tending to."