atony atoningly • atop · · · Info · Definitions · Synonyms · Characters · · atony · · Text Latin · · Script 5 · · Length Definitions · · · (noun) lack of normal muscular tension or tonus. Synonyms: atonicity, atonia, amyotonia. · · Noun Definition 1 Synonyms · · · atonicity · · Synonym 1 atonia · · Synonym 2 amyotonia · · Synonym 3 Characters · · a latin small letter a U+0061 n latin small letter n U+006E o latin small letter o U+006F t latin small letter t U+0074 y latin small letter y U+0079