grandpa grandniece • grandparent · · · Info · Definitions · Synonyms · Characters · · grandpa · · Text Latin · · Script 7 · · Length Definitions · · · (noun) the father of your father or mother. Synonyms: grandfather, gramps, granddad, grandad, granddaddy. · · Noun Definition 1 Synonyms · · · grandfather · · Synonym 1 gramps · · Synonym 2 granddad · · Synonym 3 grandad · · Synonym 4 granddaddy · · Synonym 5 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 g latin small letter g U+0067 n latin small letter n U+006E p latin small letter p U+0070 r latin small letter r U+0072