base runner base rocket • base running · · · Info · Definitions · Synonyms · Characters · · base runner · · Text Common · · Latin · · Scripts 11 · · Length Definitions · · · (noun) a baseball player on the team at bat who is on base (or attempting to reach a base). Synonyms: runner. · · Noun Definition 1 Synonyms · · · base · · Synonym 1 base of operations · · Synonym 2 foundation · · Synonym 3 fundament · · Synonym 4 foot · · Synonym 5 groundwork · · Synonym 6 substructure · · Synonym 7 understructure · · Synonym 8 bag · · Synonym 9 floor · · Synonym 10 basis · · Synonym 11 cornerstone · · Synonym 12 pedestal · · Synonym 13 stand · · Synonym 14 nucleotide · · Synonym 15 alkali · · Synonym 16 radix · · Synonym 17 home · · Synonym 18 al-qaeda · · Synonym 19 qaeda · · Synonym 20 al-qa'ida · · Synonym 21 al-qaida · · Synonym 22 root · · Synonym 23 root word · · Synonym 24 stem · · Synonym 25 theme · · Synonym 26 radical · · Synonym 27 infrastructure · · Synonym 28 establish · · Synonym 29 ground · · Synonym 30 found · · Synonym 31 free-base · · Synonym 32 basal · · Synonym 33 baseborn · · Synonym 34 humble · · Synonym 35 lowly · · Synonym 36 immoral · · Synonym 37 mean · · Synonym 38 meanspirited · · Synonym 39 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075