ɐ mˈɛkənˌɪzəm ɪz kˈɔːld ɪnsˈɛntɪvkəmpˈæɾᵻbəl ˌaɪsˈiː ɪf ˈɛvɹi pɑːɹtˈɪsɪpənt kæn ɐtʃˈiːv ðə bˈɛst ˈaʊtkʌm tə ðɛmsˈɛlvz dʒˈʌst baɪ ˈæktɪŋ ɐkˈoːɹdɪŋ tə ðɛɹ tɹˈuː pɹˈɛfɹənsᵻz.
A mechanism is called incentive-compatible (IC) if every participant can achieve the best outcome to themselves just by acting according to their true preferences.