From Longman Dictionary of Contemporary Englishin words of one syllablein words of one syllablesaying something in a way that is very easy to understand, especially because the person you are talking to is stupid You have to put everything in words of one syllable for her. → word
Examples from the Corpus
in words of one syllable• Cotey -- real slow and in words of one syllable -- and then diagram them in stick figures with Crayolas. 