Developed to document the specifications for supplementary instruction in a skills-based vocabulary program, this report focuses on the study of synonyms as relating to the learning of specific words. One hundred twenty-nine general headwords and more than 1,500 synonyms for these headwords, specified for use in instruction in grades four through nine, are listed in the report. Based on grade level and frequency information about the synonyms, the headwords are tentatively organized into six levels for instruction. The procedures used to obtain the synonyms are outlined, and lists of critical attributes and definitions for selected synonyms are included. (Author/DF)