force·ful \ˈfōrsfəl, ˈfȯrs-, ˈfōəs-, ˈfȯ(ə)s\adjective : possessing or filled with force : exerting or impelled by force : forcible, mighty, effective < a vigorous forceful personality > < his forceful presentation of the data > < won the Pulitzer prize for his forceful novel > • force·ful·ly\-f(ə)lē, -li\adverb • force·ful·nessnoun-es