unfastener unfastened • unfastidious · · · Info · Definitions · Synonyms · Characters · · unfastener · · Text Latin · · Script 10 · · Length Definitions · · · (noun) a person who unfastens or unwraps or opens. Synonyms: undoer, opener, untier. Example: "Children are talented undoers of their shoelaces." · · Noun Definition 1 Synonyms · · · undoer · · Synonym 1 opener · · Synonym 2 untier · · Synonym 3 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075