Lacking grace or fluency; labored and dull: a ponderous speech. See Synonyms at heavy.
[Middle English, from Old French pondereux, from Latin ponderōsus, from pondus, ponder-, weight; see (s)pen- in Indo-European roots.] pon'der·ous·ly adv., pon'der·ous·ness, pon'der·os'i·ty (-ŏs'ĭ-tē) n.