common sense Syllabification: (com·mon sense)Translate common sense | into French | into German | into Spanish Definition of common sense noun good sense and sound judgment in practical matters:use your common sense [as modifier]:a common-sense approachDerivatives commonsensicalPronunciation: /ˌkämənˈsensikəl/ adjective common sense in other Oxford dictionaries Definition of common sense in the British & World English dictionary